Finding the Third Proportional to 327,411.50 and 489,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   327,411.50 : 489,100.50 = 489,100.50 : x
2. Step 2: Convert to fraction form
   327,411.50/489,100.50 = 489,100.50/x
3. Step 3: Cross multiply
   327,411.50x = 489,100.50 × 489,100.50
4. Step 4: Simplify right side
   327,411.50x = 239,219,299,100.25
5. Step 5: Solve for x
   x = 239,219,299,100.25/327,411.50
6. Step 6: Final answer
   x = 730,638.05