Finding the Third Proportional to 56.74 and 124.32

Step by Step Solution

1. Step 1: Write the proportion equation
   56.74 : 124.32 = 124.32 : x
2. Step 2: Convert to fraction form
   56.74/124.32 = 124.32/x
3. Step 3: Cross multiply
   56.74x = 124.32 × 124.32
4. Step 4: Simplify right side
   56.74x = 15,455.78
5. Step 5: Solve for x
   x = 15,455.78/56.74
6. Step 6: Final answer
   x = 272.39