Finding the Third Proportional to 151,920 and 331,175.25

Step by Step Solution

1. Step 1: Write the proportion equation
   151,920 : 331,175.25 = 331,175.25 : x
2. Step 2: Convert to fraction form
   151,920/331,175.25 = 331,175.25/x
3. Step 3: Cross multiply
   151,920x = 331,175.25 × 331,175.25
4. Step 4: Simplify right side
   151,920x = 109,677,046,212.56
5. Step 5: Solve for x
   x = 109,677,046,212.56/151,920
6. Step 6: Final answer
   x = 721,939.48