Finding the Third Proportional to 325,152 and 485,280

Step by Step Solution

1. Step 1: Write the proportion equation
   325,152 : 485,280 = 485,280 : x
2. Step 2: Convert to fraction form
   325,152/485,280 = 485,280/x
3. Step 3: Cross multiply
   325,152x = 485,280 × 485,280
4. Step 4: Simplify right side
   325,152x = 235,496,678,400
5. Step 5: Solve for x
   x = 235,496,678,400/325,152
6. Step 6: Final answer
   x = 724,266.43