Finding the Third Proportional to 91,005,908 and 128,770,552

Step by Step Solution

1. Step 1: Write the proportion equation
   91,005,908 : 128,770,552 = 128,770,552 : x
2. Step 2: Convert to fraction form
   91,005,908/128,770,552 = 128,770,552/x
3. Step 3: Cross multiply
   91,005,908x = 128,770,552 × 128,770,552
4. Step 4: Simplify right side
   91,005,908x = 16,581,855,062,384,704
5. Step 5: Solve for x
   x = 16,581,855,062,384,704/91,005,908
6. Step 6: Final answer
   x = 182,206,358.10