Finding the Third Proportional to 250,292.50 and 518,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,292.50 : 518,329.50 = 518,329.50 : x
2. Step 2: Convert to fraction form
   250,292.50/518,329.50 = 518,329.50/x
3. Step 3: Cross multiply
   250,292.50x = 518,329.50 × 518,329.50
4. Step 4: Simplify right side
   250,292.50x = 268,665,470,570.25
5. Step 5: Solve for x
   x = 268,665,470,570.25/250,292.50
6. Step 6: Final answer
   x = 1,073,406.00