Finding the Third Proportional to 57.74 and 124.51

Step by Step Solution

1. Step 1: Write the proportion equation
   57.74 : 124.51 = 124.51 : x
2. Step 2: Convert to fraction form
   57.74/124.51 = 124.51/x
3. Step 3: Cross multiply
   57.74x = 124.51 × 124.51
4. Step 4: Simplify right side
   57.74x = 15,501.71
5. Step 5: Solve for x
   x = 15,501.71/57.74
6. Step 6: Final answer
   x = 268.46