Finding the Third Proportional to 411.38 and 626.63

Step by Step Solution

1. Step 1: Write the proportion equation
   411.38 : 626.63 = 626.63 : x
2. Step 2: Convert to fraction form
   411.38/626.63 = 626.63/x
3. Step 3: Cross multiply
   411.38x = 626.63 × 626.63
4. Step 4: Simplify right side
   411.38x = 392,658.89
5. Step 5: Solve for x
   x = 392,658.89/411.38
6. Step 6: Final answer
   x = 954.50