Finding the Third Proportional to 200,717.25 and 275,233.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,717.25 : 275,233.50 = 275,233.50 : x
2. Step 2: Convert to fraction form
   200,717.25/275,233.50 = 275,233.50/x
3. Step 3: Cross multiply
   200,717.25x = 275,233.50 × 275,233.50
4. Step 4: Simplify right side
   200,717.25x = 75,753,479,522.25
5. Step 5: Solve for x
   x = 75,753,479,522.25/200,717.25
6. Step 6: Final answer
   x = 377,413.90