Finding the Third Proportional to 42.38 and 69

Step by Step Solution

1. Step 1: Write the proportion equation
   42.38 : 69 = 69 : x
2. Step 2: Convert to fraction form
   42.38/69 = 69/x
3. Step 3: Cross multiply
   42.38x = 69 × 69
4. Step 4: Simplify right side
   42.38x = 4,761
5. Step 5: Solve for x
   x = 4,761/42.38
6. Step 6: Final answer
   x = 112.35