Congratulations to all the Indians.
One thing I want to make clear. Did you mean first ever in the indian history ?? India being on top in the world in terms of population (after China) produced ONLY 1 individual gold medalist in the History ? I think there might be a mistake in the information provided, because even less populated countries like Turkey have produced more individual gold medalists.
Yes that is why it is a very proud moment my friend.
To put things in perspective for you, Pakistan has more than twice the population of Turkey (as you mentioned as a less populated country) and have not won a single individual gold medal to my knowledge. Pakistan is pretty high on the list in terms of population numbers in the world. I hope you can understand that is not only the population that matters, but the involvement of the people and country in sports. Another example I can give you is Australia, probably the top Olympic competitors and their population is on the low-end but their sporting culture is huge. Besides China, asian countries do not have the resources or the mindset to push the sporting culture further in their respective countries. But winning a gold medal can inspire millions of people around the country and kick start an interest into looking at sport seriously.