You want to withdraw 1010 Australian Dollars two years from now. Use the analytical method, as well as the spreadsheet built-in function and tabular ("goal seek") methods, to find the annual interest rate that you would get if you are putting 450 Canadian Dollars today and 500 Australian Dollars a year from now into an account.

I specifically want to know how to do the goal-seek part of the question. I would like to know how exactly you found the answer as well.