Finding the Third Proportional to 200,549.50 and 300,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,549.50 : 300,868.50 = 300,868.50 : x
2. Step 2: Convert to fraction form
   200,549.50/300,868.50 = 300,868.50/x
3. Step 3: Cross multiply
   200,549.50x = 300,868.50 × 300,868.50
4. Step 4: Simplify right side
   200,549.50x = 90,521,854,292.25
5. Step 5: Solve for x
   x = 90,521,854,292.25/200,549.50
6. Step 6: Final answer
   x = 451,369.13