Finding the Third Proportional to 151,180 and 329,990

Step by Step Solution

1. Step 1: Write the proportion equation
   151,180 : 329,990 = 329,990 : x
2. Step 2: Convert to fraction form
   151,180/329,990 = 329,990/x
3. Step 3: Cross multiply
   151,180x = 329,990 × 329,990
4. Step 4: Simplify right side
   151,180x = 108,893,400,100
5. Step 5: Solve for x
   x = 108,893,400,100/151,180
6. Step 6: Final answer
   x = 720,289.72