Finding the Third Proportional to 40.25 and 54.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40.25 : 54.25 = 54.25 : x
2. Step 2: Convert to fraction form
   40.25/54.25 = 54.25/x
3. Step 3: Cross multiply
   40.25x = 54.25 × 54.25
4. Step 4: Simplify right side
   40.25x = 2,943.06
5. Step 5: Solve for x
   x = 2,943.06/40.25
6. Step 6: Final answer
   x = 73.12