Finding the Third Proportional to 126,443 and 272,488

Step by Step Solution

1. Step 1: Write the proportion equation
   126,443 : 272,488 = 272,488 : x
2. Step 2: Convert to fraction form
   126,443/272,488 = 272,488/x
3. Step 3: Cross multiply
   126,443x = 272,488 × 272,488
4. Step 4: Simplify right side
   126,443x = 74,249,710,144
5. Step 5: Solve for x
   x = 74,249,710,144/126,443
6. Step 6: Final answer
   x = 587,218.83