Finding the Third Proportional to 126,409.50 and 276,966

Step by Step Solution

1. Step 1: Write the proportion equation
   126,409.50 : 276,966 = 276,966 : x
2. Step 2: Convert to fraction form
   126,409.50/276,966 = 276,966/x
3. Step 3: Cross multiply
   126,409.50x = 276,966 × 276,966
4. Step 4: Simplify right side
   126,409.50x = 76,710,165,156
5. Step 5: Solve for x
   x = 76,710,165,156/126,409.50
6. Step 6: Final answer
   x = 606,838.61