Finding the Third Proportional to 61.50 and 124.88

Step by Step Solution

1. Step 1: Write the proportion equation
   61.50 : 124.88 = 124.88 : x
2. Step 2: Convert to fraction form
   61.50/124.88 = 124.88/x
3. Step 3: Cross multiply
   61.50x = 124.88 × 124.88
4. Step 4: Simplify right side
   61.50x = 15,593.77
5. Step 5: Solve for x
   x = 15,593.77/61.50
6. Step 6: Final answer
   x = 253.56