Finding the Third Proportional to 143,346 and 200,493

Step by Step Solution

1. Step 1: Write the proportion equation
   143,346 : 200,493 = 200,493 : x
2. Step 2: Convert to fraction form
   143,346/200,493 = 200,493/x
3. Step 3: Cross multiply
   143,346x = 200,493 × 200,493
4. Step 4: Simplify right side
   143,346x = 40,197,443,049
5. Step 5: Solve for x
   x = 40,197,443,049/143,346
6. Step 6: Final answer
   x = 280,422.50