Finding the Third Proportional to 548,571 and 822,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   548,571 : 822,856.50 = 822,856.50 : x
2. Step 2: Convert to fraction form
   548,571/822,856.50 = 822,856.50/x
3. Step 3: Cross multiply
   548,571x = 822,856.50 × 822,856.50
4. Step 4: Simplify right side
   548,571x = 677,092,819,592.25
5. Step 5: Solve for x
   x = 677,092,819,592.25/548,571
6. Step 6: Final answer
   x = 1,234,284.75