Finding the Third Proportional to 522,140.50 and 807,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   522,140.50 : 807,799.50 = 807,799.50 : x
2. Step 2: Convert to fraction form
   522,140.50/807,799.50 = 807,799.50/x
3. Step 3: Cross multiply
   522,140.50x = 807,799.50 × 807,799.50
4. Step 4: Simplify right side
   522,140.50x = 652,540,032,200.25
5. Step 5: Solve for x
   x = 652,540,032,200.25/522,140.50
6. Step 6: Final answer
   x = 1,249,740.31