Finding the Third Proportional to 123.38 and 132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123.38 : 132.56 = 132.56 : x
2. Step 2: Convert to fraction form
   123.38/132.56 = 132.56/x
3. Step 3: Cross multiply
   123.38x = 132.56 × 132.56
4. Step 4: Simplify right side
   123.38x = 17,572.82
5. Step 5: Solve for x
   x = 17,572.82/123.38
6. Step 6: Final answer
   x = 142.43