Finding the Third Proportional to 57,615.75 and 89,016.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,615.75 : 89,016.75 = 89,016.75 : x
2. Step 2: Convert to fraction form
   57,615.75/89,016.75 = 89,016.75/x
3. Step 3: Cross multiply
   57,615.75x = 89,016.75 × 89,016.75
4. Step 4: Simplify right side
   57,615.75x = 7,923,981,780.56
5. Step 5: Solve for x
   x = 7,923,981,780.56/57,615.75
6. Step 6: Final answer
   x = 137,531.52