Finding the Third Proportional to 64,803,798.38 and 91,154,670

Step by Step Solution

1. Step 1: Write the proportion equation
   64,803,798.38 : 91,154,670 = 91,154,670 : x
2. Step 2: Convert to fraction form
   64,803,798.38/91,154,670 = 91,154,670/x
3. Step 3: Cross multiply
   64,803,798.38x = 91,154,670 × 91,154,670
4. Step 4: Simplify right side
   64,803,798.38x = 8,309,173,862,808,900
5. Step 5: Solve for x
   x = 8,309,173,862,808,900/64,803,798.38
6. Step 6: Final answer
   x = 128,220,475.82