Finding the Third Proportional to 40.50 and 54.42

Step by Step Solution

1. Step 1: Write the proportion equation
   40.50 : 54.42 = 54.42 : x
2. Step 2: Convert to fraction form
   40.50/54.42 = 54.42/x
3. Step 3: Cross multiply
   40.50x = 54.42 × 54.42
4. Step 4: Simplify right side
   40.50x = 2,961.74
5. Step 5: Solve for x
   x = 2,961.74/40.50
6. Step 6: Final answer
   x = 73.13