1) Invest 500,000 in a profitable, reliable company
2) Set aside money for college, buy a giraffe
3) Get my money that i invested, get an new generation computer/internet
4) Buy an awesome house
5) Invest in fortune 500 companies
6) Get even more money, buy some medium-large companies, wait for more profits
7) Buy out a lot of small tech companies, slowly growing to much larger tech companies
8) Buy out the technological companies
9) Use technology to find an earth-like planet
10) If the new planet is in need of minor terraforming, I make sure it happens
11) After verified that this new planet is safe, people will be curious, and move to the new planet
12) Implement a resource based economy
13) I'm now the master of a new, self sustaining, world.
You seem to be overestimating the power of 1 million dollars.