Finding the Third Proportional to 62,238.50 and 89,469.75

Step by Step Solution

1. Step 1: Write the proportion equation
   62,238.50 : 89,469.75 = 89,469.75 : x
2. Step 2: Convert to fraction form
   62,238.50/89,469.75 = 89,469.75/x
3. Step 3: Cross multiply
   62,238.50x = 89,469.75 × 89,469.75
4. Step 4: Simplify right side
   62,238.50x = 8,004,836,165.06
5. Step 5: Solve for x
   x = 8,004,836,165.06/62,238.50
6. Step 6: Final answer
   x = 128,615.51