Finding the Third Proportional to 51.28 and 111.47

Step by Step Solution

1. Step 1: Write the proportion equation
   51.28 : 111.47 = 111.47 : x
2. Step 2: Convert to fraction form
   51.28/111.47 = 111.47/x
3. Step 3: Cross multiply
   51.28x = 111.47 × 111.47
4. Step 4: Simplify right side
   51.28x = 12,425.28
5. Step 5: Solve for x
   x = 12,425.28/51.28
6. Step 6: Final answer
   x = 242.30