Finding the Third Proportional to 548,643 and 783,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   548,643 : 783,049.50 = 783,049.50 : x
2. Step 2: Convert to fraction form
   548,643/783,049.50 = 783,049.50/x
3. Step 3: Cross multiply
   548,643x = 783,049.50 × 783,049.50
4. Step 4: Simplify right side
   548,643x = 613,166,519,450.25
5. Step 5: Solve for x
   x = 613,166,519,450.25/548,643
6. Step 6: Final answer
   x = 1,117,605.66