Finding the Third Proportional to 57,613.50 and 89,178.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,613.50 : 89,178.75 = 89,178.75 : x
2. Step 2: Convert to fraction form
   57,613.50/89,178.75 = 89,178.75/x
3. Step 3: Cross multiply
   57,613.50x = 89,178.75 × 89,178.75
4. Step 4: Simplify right side
   57,613.50x = 7,952,849,451.56
5. Step 5: Solve for x
   x = 7,952,849,451.56/57,613.50
6. Step 6: Final answer
   x = 138,037.95