Finding the Third Proportional to 280,114 and 614,648

Step by Step Solution

1. Step 1: Write the proportion equation
   280,114 : 614,648 = 614,648 : x
2. Step 2: Convert to fraction form
   280,114/614,648 = 614,648/x
3. Step 3: Cross multiply
   280,114x = 614,648 × 614,648
4. Step 4: Simplify right side
   280,114x = 377,792,163,904
5. Step 5: Solve for x
   x = 377,792,163,904/280,114
6. Step 6: Final answer
   x = 1,348,708.61