Finding the Third Proportional to 498,879 and 674,203.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,879 : 674,203.50 = 674,203.50 : x
2. Step 2: Convert to fraction form
   498,879/674,203.50 = 674,203.50/x
3. Step 3: Cross multiply
   498,879x = 674,203.50 × 674,203.50
4. Step 4: Simplify right side
   498,879x = 454,550,359,412.25
5. Step 5: Solve for x
   x = 454,550,359,412.25/498,879
6. Step 6: Final answer
   x = 911,143.50