Finding the Third Proportional to 60.87 and 89.17

Step by Step Solution

1. Step 1: Write the proportion equation
   60.87 : 89.17 = 89.17 : x
2. Step 2: Convert to fraction form
   60.87/89.17 = 89.17/x
3. Step 3: Cross multiply
   60.87x = 89.17 × 89.17
4. Step 4: Simplify right side
   60.87x = 7,950.80
5. Step 5: Solve for x
   x = 7,950.80/60.87
6. Step 6: Final answer
   x = 130.62