Finding the Third Proportional to 428,737.50 and 914,409

Step by Step Solution

1. Step 1: Write the proportion equation
   428,737.50 : 914,409 = 914,409 : x
2. Step 2: Convert to fraction form
   428,737.50/914,409 = 914,409/x
3. Step 3: Cross multiply
   428,737.50x = 914,409 × 914,409
4. Step 4: Simplify right side
   428,737.50x = 836,143,819,281
5. Step 5: Solve for x
   x = 836,143,819,281/428,737.50
6. Step 6: Final answer
   x = 1,950,246.52