Finding the Third Proportional to 40.17 and 87.89

Step by Step Solution

1. Step 1: Write the proportion equation
   40.17 : 87.89 = 87.89 : x
2. Step 2: Convert to fraction form
   40.17/87.89 = 87.89/x
3. Step 3: Cross multiply
   40.17x = 87.89 × 87.89
4. Step 4: Simplify right side
   40.17x = 7,724.76
5. Step 5: Solve for x
   x = 7,724.76/40.17
6. Step 6: Final answer
   x = 192.29