Finding the Third Proportional to 58,440.38 and 87,658.88

Step by Step Solution

1. Step 1: Write the proportion equation
   58,440.38 : 87,658.88 = 87,658.88 : x
2. Step 2: Convert to fraction form
   58,440.38/87,658.88 = 87,658.88/x
3. Step 3: Cross multiply
   58,440.38x = 87,658.88 × 87,658.88
4. Step 4: Simplify right side
   58,440.38x = 7,684,078,366.27
5. Step 5: Solve for x
   x = 7,684,078,366.27/58,440.38
6. Step 6: Final answer
   x = 131,485.78