Finding the Third Proportional to 62,731.13 and 89,425.69

Step by Step Solution

1. Step 1: Write the proportion equation
   62,731.13 : 89,425.69 = 89,425.69 : x
2. Step 2: Convert to fraction form
   62,731.13/89,425.69 = 89,425.69/x
3. Step 3: Cross multiply
   62,731.13x = 89,425.69 × 89,425.69
4. Step 4: Simplify right side
   62,731.13x = 7,996,953,584.85
5. Step 5: Solve for x
   x = 7,996,953,584.85/62,731.13
6. Step 6: Final answer
   x = 127,479.84