Finding the Third Proportional to 56,414.50 and 122,540

Step by Step Solution

1. Step 1: Write the proportion equation
   56,414.50 : 122,540 = 122,540 : x
2. Step 2: Convert to fraction form
   56,414.50/122,540 = 122,540/x
3. Step 3: Cross multiply
   56,414.50x = 122,540 × 122,540
4. Step 4: Simplify right side
   56,414.50x = 15,016,051,600
5. Step 5: Solve for x
   x = 15,016,051,600/56,414.50
6. Step 6: Final answer
   x = 266,173.62