Finding the Third Proportional to 51.38 and 111.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51.38 : 111.56 = 111.56 : x
2. Step 2: Convert to fraction form
   51.38/111.56 = 111.56/x
3. Step 3: Cross multiply
   51.38x = 111.56 × 111.56
4. Step 4: Simplify right side
   51.38x = 12,446.19
5. Step 5: Solve for x
   x = 12,446.19/51.38
6. Step 6: Final answer
   x = 242.26