Finding the Third Proportional to 411.50 and 912.88

Step by Step Solution

1. Step 1: Write the proportion equation
   411.50 : 912.88 = 912.88 : x
2. Step 2: Convert to fraction form
   411.50/912.88 = 912.88/x
3. Step 3: Cross multiply
   411.50x = 912.88 × 912.88
4. Step 4: Simplify right side
   411.50x = 833,340.77
5. Step 5: Solve for x
   x = 833,340.77/411.50
6. Step 6: Final answer
   x = 2,025.13