Finding the Third Proportional to 67,272 and 142,743

Step by Step Solution

1. Step 1: Write the proportion equation
   67,272 : 142,743 = 142,743 : x
2. Step 2: Convert to fraction form
   67,272/142,743 = 142,743/x
3. Step 3: Cross multiply
   67,272x = 142,743 × 142,743
4. Step 4: Simplify right side
   67,272x = 20,375,564,049
5. Step 5: Solve for x
   x = 20,375,564,049/67,272
6. Step 6: Final answer
   x = 302,883.28