Finding the Third Proportional to 428,707.50 and 914,352

Step by Step Solution

1. Step 1: Write the proportion equation
   428,707.50 : 914,352 = 914,352 : x
2. Step 2: Convert to fraction form
   428,707.50/914,352 = 914,352/x
3. Step 3: Cross multiply
   428,707.50x = 914,352 × 914,352
4. Step 4: Simplify right side
   428,707.50x = 836,039,579,904
5. Step 5: Solve for x
   x = 836,039,579,904/428,707.50
6. Step 6: Final answer
   x = 1,950,139.85