Finding the Third Proportional to 150,204.38 and 321,732

Step by Step Solution

1. Step 1: Write the proportion equation
   150,204.38 : 321,732 = 321,732 : x
2. Step 2: Convert to fraction form
   150,204.38/321,732 = 321,732/x
3. Step 3: Cross multiply
   150,204.38x = 321,732 × 321,732
4. Step 4: Simplify right side
   150,204.38x = 103,511,479,824
5. Step 5: Solve for x
   x = 103,511,479,824/150,204.38
6. Step 6: Final answer
   x = 689,137.58