Finding the Third Proportional to 56.43 and 125.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56.43 : 125.72 = 125.72 : x
2. Step 2: Convert to fraction form
   56.43/125.72 = 125.72/x
3. Step 3: Cross multiply
   56.43x = 125.72 × 125.72
4. Step 4: Simplify right side
   56.43x = 15,805.20
5. Step 5: Solve for x
   x = 15,805.20/56.43
6. Step 6: Final answer
   x = 280.11