Finding the Third Proportional to 642,831 and 951,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   642,831 : 951,124.50 = 951,124.50 : x
2. Step 2: Convert to fraction form
   642,831/951,124.50 = 951,124.50/x
3. Step 3: Cross multiply
   642,831x = 951,124.50 × 951,124.50
4. Step 4: Simplify right side
   642,831x = 904,637,814,500.25
5. Step 5: Solve for x
   x = 904,637,814,500.25/642,831
6. Step 6: Final answer
   x = 1,407,271.61