Finding the Third Proportional to 522,139.50 and 807,798

Step by Step Solution

1. Step 1: Write the proportion equation
   522,139.50 : 807,798 = 807,798 : x
2. Step 2: Convert to fraction form
   522,139.50/807,798 = 807,798/x
3. Step 3: Cross multiply
   522,139.50x = 807,798 × 807,798
4. Step 4: Simplify right side
   522,139.50x = 652,537,608,804
5. Step 5: Solve for x
   x = 652,537,608,804/522,139.50
6. Step 6: Final answer
   x = 1,249,738.07