Finding the Third Proportional to 126,298.50 and 276,378

Step by Step Solution

1. Step 1: Write the proportion equation
   126,298.50 : 276,378 = 276,378 : x
2. Step 2: Convert to fraction form
   126,298.50/276,378 = 276,378/x
3. Step 3: Cross multiply
   126,298.50x = 276,378 × 276,378
4. Step 4: Simplify right side
   126,298.50x = 76,384,798,884
5. Step 5: Solve for x
   x = 76,384,798,884/126,298.50
6. Step 6: Final answer
   x = 604,795.77