Finding the Third Proportional to 40.78 and 61.17

Step by Step Solution

1. Step 1: Write the proportion equation
   40.78 : 61.17 = 61.17 : x
2. Step 2: Convert to fraction form
   40.78/61.17 = 61.17/x
3. Step 3: Cross multiply
   40.78x = 61.17 × 61.17
4. Step 4: Simplify right side
   40.78x = 3,742.00
5. Step 5: Solve for x
   x = 3,742.00/40.78
6. Step 6: Final answer
   x = 91.76