Finding the Third Proportional to 151,920 and 329,760

Step by Step Solution

1. Step 1: Write the proportion equation
   151,920 : 329,760 = 329,760 : x
2. Step 2: Convert to fraction form
   151,920/329,760 = 329,760/x
3. Step 3: Cross multiply
   151,920x = 329,760 × 329,760
4. Step 4: Simplify right side
   151,920x = 108,741,657,600
5. Step 5: Solve for x
   x = 108,741,657,600/151,920
6. Step 6: Final answer
   x = 715,782.37