Finding the Third Proportional to 143,316 and 200,448

Step by Step Solution

1. Step 1: Write the proportion equation
   143,316 : 200,448 = 200,448 : x
2. Step 2: Convert to fraction form
   143,316/200,448 = 200,448/x
3. Step 3: Cross multiply
   143,316x = 200,448 × 200,448
4. Step 4: Simplify right side
   143,316x = 40,179,400,704
5. Step 5: Solve for x
   x = 40,179,400,704/143,316
6. Step 6: Final answer
   x = 280,355.30