Finding the Third Proportional to 60,290.50 and 88,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,290.50 : 88,691.50 = 88,691.50 : x
2. Step 2: Convert to fraction form
   60,290.50/88,691.50 = 88,691.50/x
3. Step 3: Cross multiply
   60,290.50x = 88,691.50 × 88,691.50
4. Step 4: Simplify right side
   60,290.50x = 7,866,182,172.25
5. Step 5: Solve for x
   x = 7,866,182,172.25/60,290.50
6. Step 6: Final answer
   x = 130,471.34