Finding the Third Proportional to 40,358.25 and 72,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,358.25 : 72,616.50 = 72,616.50 : x
2. Step 2: Convert to fraction form
   40,358.25/72,616.50 = 72,616.50/x
3. Step 3: Cross multiply
   40,358.25x = 72,616.50 × 72,616.50
4. Step 4: Simplify right side
   40,358.25x = 5,273,156,072.25
5. Step 5: Solve for x
   x = 5,273,156,072.25/40,358.25
6. Step 6: Final answer
   x = 130,658.69