Finding the Third Proportional to 327,689.25 and 442,728

Step by Step Solution

1. Step 1: Write the proportion equation
   327,689.25 : 442,728 = 442,728 : x
2. Step 2: Convert to fraction form
   327,689.25/442,728 = 442,728/x
3. Step 3: Cross multiply
   327,689.25x = 442,728 × 442,728
4. Step 4: Simplify right side
   327,689.25x = 196,008,081,984
5. Step 5: Solve for x
   x = 196,008,081,984/327,689.25
6. Step 6: Final answer
   x = 598,152.31