Finding the Third Proportional to 59,780 and 89,555

Step by Step Solution

1. Step 1: Write the proportion equation
   59,780 : 89,555 = 89,555 : x
2. Step 2: Convert to fraction form
   59,780/89,555 = 89,555/x
3. Step 3: Cross multiply
   59,780x = 89,555 × 89,555
4. Step 4: Simplify right side
   59,780x = 8,020,098,025
5. Step 5: Solve for x
   x = 8,020,098,025/59,780
6. Step 6: Final answer
   x = 134,160.22