Finding the Third Proportional to 40.92 and 64.17

Step by Step Solution

1. Step 1: Write the proportion equation
   40.92 : 64.17 = 64.17 : x
2. Step 2: Convert to fraction form
   40.92/64.17 = 64.17/x
3. Step 3: Cross multiply
   40.92x = 64.17 × 64.17
4. Step 4: Simplify right side
   40.92x = 4,118.03
5. Step 5: Solve for x
   x = 4,118.03/40.92
6. Step 6: Final answer
   x = 100.63