Finding the Third Proportional to 63,715.50 and 89,138.25

Step by Step Solution

1. Step 1: Write the proportion equation
   63,715.50 : 89,138.25 = 89,138.25 : x
2. Step 2: Convert to fraction form
   63,715.50/89,138.25 = 89,138.25/x
3. Step 3: Cross multiply
   63,715.50x = 89,138.25 × 89,138.25
4. Step 4: Simplify right side
   63,715.50x = 7,945,627,613.06
5. Step 5: Solve for x
   x = 7,945,627,613.06/63,715.50
6. Step 6: Final answer
   x = 124,704.78