Finding the Third Proportional to 248,614 and 394,294.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,614 : 394,294.50 = 394,294.50 : x
2. Step 2: Convert to fraction form
   248,614/394,294.50 = 394,294.50/x
3. Step 3: Cross multiply
   248,614x = 394,294.50 × 394,294.50
4. Step 4: Simplify right side
   248,614x = 155,468,152,730.25
5. Step 5: Solve for x
   x = 155,468,152,730.25/248,614
6. Step 6: Final answer
   x = 625,339.49