Finding the Third Proportional to 143,399 and 200,568

Step by Step Solution

1. Step 1: Write the proportion equation
   143,399 : 200,568 = 200,568 : x
2. Step 2: Convert to fraction form
   143,399/200,568 = 200,568/x
3. Step 3: Cross multiply
   143,399x = 200,568 × 200,568
4. Step 4: Simplify right side
   143,399x = 40,227,522,624
5. Step 5: Solve for x
   x = 40,227,522,624/143,399
6. Step 6: Final answer
   x = 280,528.61