Finding the Third Proportional to 98,387,688 and 215,309,458

Step by Step Solution

1. Step 1: Write the proportion equation
   98,387,688 : 215,309,458 = 215,309,458 : x
2. Step 2: Convert to fraction form
   98,387,688/215,309,458 = 215,309,458/x
3. Step 3: Cross multiply
   98,387,688x = 215,309,458 × 215,309,458
4. Step 4: Simplify right side
   98,387,688x = 46,358,162,704,253,760
5. Step 5: Solve for x
   x = 46,358,162,704,253,760/98,387,688
6. Step 6: Final answer
   x = 471,178,494.45