Finding the Third Proportional to 428,961 and 914,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,961 : 914,920.50 = 914,920.50 : x
2. Step 2: Convert to fraction form
   428,961/914,920.50 = 914,920.50/x
3. Step 3: Cross multiply
   428,961x = 914,920.50 × 914,920.50
4. Step 4: Simplify right side
   428,961x = 837,079,521,320.25
5. Step 5: Solve for x
   x = 837,079,521,320.25/428,961
6. Step 6: Final answer
   x = 1,951,411.72