Finding the Third Proportional to 142,856 and 272,748

Step by Step Solution

1. Step 1: Write the proportion equation
   142,856 : 272,748 = 272,748 : x
2. Step 2: Convert to fraction form
   142,856/272,748 = 272,748/x
3. Step 3: Cross multiply
   142,856x = 272,748 × 272,748
4. Step 4: Simplify right side
   142,856x = 74,391,471,504
5. Step 5: Solve for x
   x = 74,391,471,504/142,856
6. Step 6: Final answer
   x = 520,744.47