Finding the Third Proportional to 42.40 and 94.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42.40 : 94.29 = 94.29 : x
2. Step 2: Convert to fraction form
   42.40/94.29 = 94.29/x
3. Step 3: Cross multiply
   42.40x = 94.29 × 94.29
4. Step 4: Simplify right side
   42.40x = 8,890.43
5. Step 5: Solve for x
   x = 8,890.43/42.40
6. Step 6: Final answer
   x = 209.69