Finding the Third Proportional to 142,772 and 296,872

Step by Step Solution

1. Step 1: Write the proportion equation
   142,772 : 296,872 = 296,872 : x
2. Step 2: Convert to fraction form
   142,772/296,872 = 296,872/x
3. Step 3: Cross multiply
   142,772x = 296,872 × 296,872
4. Step 4: Simplify right side
   142,772x = 88,132,984,384
5. Step 5: Solve for x
   x = 88,132,984,384/142,772
6. Step 6: Final answer
   x = 617,298.80