Frankly, I know it is a joke when people say bitcoin will get to a million dollar per coin.There's no way this is going to be possible because we are dealing with the issue of supply and demand.
Then I would like to say kindly correct your math, and it is proved so many times that if even half of the population starts using Bitcoin than price will skyrocket. It all depends upon the demand of Bitcoin over the coming years. Crypto is still in the hands of few percentage of users, which also manipulates the market due to which Bitcoin growth shatters after some time.
Then when you can expect it to become million dollar per coin ? I think not very soon, we still need help from government and media so that people start using this currency but it seems quite unrealistic but I think anything is possible when it comes to Bitcoin.