Finding the Third Proportional to 62,239.50 and 89,471.25

Step by Step Solution

1. Step 1: Write the proportion equation
   62,239.50 : 89,471.25 = 89,471.25 : x
2. Step 2: Convert to fraction form
   62,239.50/89,471.25 = 89,471.25/x
3. Step 3: Cross multiply
   62,239.50x = 89,471.25 × 89,471.25
4. Step 4: Simplify right side
   62,239.50x = 8,005,104,576.56
5. Step 5: Solve for x
   x = 8,005,104,576.56/62,239.50
6. Step 6: Final answer
   x = 128,617.75