Company A issued a 10-year bond of $1,650.00 million to finance a project. Company A paid bond holders a total of $28.88 million every six months. At the end of 4^th year, company A decided to redeem the bond for $1,953.60 million. What is the financial cost of the capital for the project?

PV=FV/(1+(i/2)^nt)

Please provide the equation used to calculate the financial cost. If I'm not mistaken the equation will need to be manipulated in order to solve for i.