Finding the Third Proportional to 126,401.77 and 276,945.96

Step by Step Solution

1. Step 1: Write the proportion equation
   126,401.77 : 276,945.96 = 276,945.96 : x
2. Step 2: Convert to fraction form
   126,401.77/276,945.96 = 276,945.96/x
3. Step 3: Cross multiply
   126,401.77x = 276,945.96 × 276,945.96
4. Step 4: Simplify right side
   126,401.77x = 76,699,065,279.60
5. Step 5: Solve for x
   x = 76,699,065,279.60/126,401.77
6. Step 6: Final answer
   x = 606,787.93