Finding the Third Proportional to 126,279 and 276,300

Step by Step Solution

1. Step 1: Write the proportion equation
   126,279 : 276,300 = 276,300 : x
2. Step 2: Convert to fraction form
   126,279/276,300 = 276,300/x
3. Step 3: Cross multiply
   126,279x = 276,300 × 276,300
4. Step 4: Simplify right side
   126,279x = 76,341,690,000
5. Step 5: Solve for x
   x = 76,341,690,000/126,279
6. Step 6: Final answer
   x = 604,547.79