Finding the Third Proportional to 249,138.50 and 584,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,138.50 : 584,891.50 = 584,891.50 : x
2. Step 2: Convert to fraction form
   249,138.50/584,891.50 = 584,891.50/x
3. Step 3: Cross multiply
   249,138.50x = 584,891.50 × 584,891.50
4. Step 4: Simplify right side
   249,138.50x = 342,098,066,772.25
5. Step 5: Solve for x
   x = 342,098,066,772.25/249,138.50
6. Step 6: Final answer
   x = 1,373,124.05