Finding the Third Proportional to 151,360 and 328,920

Step by Step Solution

1. Step 1: Write the proportion equation
   151,360 : 328,920 = 328,920 : x
2. Step 2: Convert to fraction form
   151,360/328,920 = 328,920/x
3. Step 3: Cross multiply
   151,360x = 328,920 × 328,920
4. Step 4: Simplify right side
   151,360x = 108,188,366,400
5. Step 5: Solve for x
   x = 108,188,366,400/151,360
6. Step 6: Final answer
   x = 714,775.15