Finding the Third Proportional to 327,408.50 and 489,096

Step by Step Solution

1. Step 1: Write the proportion equation
   327,408.50 : 489,096 = 489,096 : x
2. Step 2: Convert to fraction form
   327,408.50/489,096 = 489,096/x
3. Step 3: Cross multiply
   327,408.50x = 489,096 × 489,096
4. Step 4: Simplify right side
   327,408.50x = 239,214,897,216
5. Step 5: Solve for x
   x = 239,214,897,216/327,408.50
6. Step 6: Final answer
   x = 730,631.30