Finding the Third Proportional to 323,685 and 490,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   323,685 : 490,025.50 = 490,025.50 : x
2. Step 2: Convert to fraction form
   323,685/490,025.50 = 490,025.50/x
3. Step 3: Cross multiply
   323,685x = 490,025.50 × 490,025.50
4. Step 4: Simplify right side
   323,685x = 240,124,990,650.25
5. Step 5: Solve for x
   x = 240,124,990,650.25/323,685
6. Step 6: Final answer
   x = 741,847.76