Question

how much to invest with 12% return to get 1 million for the next 5 year

Answer 1

Invested when? As a lump sum? Are you trying to have 1 million after 5 years or 1 million per year, and use it up?

Answer 2

How much would an investor with a 12% required return be willing to invest in a project that will provide a cash flow of $2M every year for five years, five years from now, i.e. in years 6,7,8,9 and 10.