Finding the Third Proportional to 64,715,862 and 91,027,429

Step by Step Solution

1. Step 1: Write the proportion equation
   64,715,862 : 91,027,429 = 91,027,429 : x
2. Step 2: Convert to fraction form
   64,715,862/91,027,429 = 91,027,429/x
3. Step 3: Cross multiply
   64,715,862x = 91,027,429 × 91,027,429
4. Step 4: Simplify right side
   64,715,862x = 8,285,992,830,350,041
5. Step 5: Solve for x
   x = 8,285,992,830,350,041/64,715,862
6. Step 6: Final answer
   x = 128,036,505.65