1) The investor sets up a paid delegate, and gets voted in (because the shareholders approve of the plan).
2a) Every time their turn comes around, (every 101 blocks), the investor gets 50 BTS.
2b) The investor then pays 50 BTS worth of money into 'capital infusion fund', which everyone can see and is used for whatever purpose this investment was supposed to be going towards.
3) Repeat #2 for as long as needed until 10 million $ has been given. (At current market cap this isnt really possible. At a billion dollar cap it would be over time).
More realistically though, for most purposes the investor would simply buy $10M worth of BTSX on the open market and drive up the BTSX price.