Finding the Third Proportional to 323,568 and 489,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   323,568 : 489,876.50 = 489,876.50 : x
2. Step 2: Convert to fraction form
   323,568/489,876.50 = 489,876.50/x
3. Step 3: Cross multiply
   323,568x = 489,876.50 × 489,876.50
4. Step 4: Simplify right side
   323,568x = 239,978,985,252.25
5. Step 5: Solve for x
   x = 239,978,985,252.25/323,568
6. Step 6: Final answer
   x = 741,664.77