Finding the Third Proportional to 64,715,850 and 91,027,406

Step by Step Solution

1. Step 1: Write the proportion equation
   64,715,850 : 91,027,406 = 91,027,406 : x
2. Step 2: Convert to fraction form
   64,715,850/91,027,406 = 91,027,406/x
3. Step 3: Cross multiply
   64,715,850x = 91,027,406 × 91,027,406
4. Step 4: Simplify right side
   64,715,850x = 8,285,988,643,088,836
5. Step 5: Solve for x
   x = 8,285,988,643,088,836/64,715,850
6. Step 6: Final answer
   x = 128,036,464.69