Finding the Third Proportional to 280,492 and 612,384

Step by Step Solution

1. Step 1: Write the proportion equation
   280,492 : 612,384 = 612,384 : x
2. Step 2: Convert to fraction form
   280,492/612,384 = 612,384/x
3. Step 3: Cross multiply
   280,492x = 612,384 × 612,384
4. Step 4: Simplify right side
   280,492x = 375,014,163,456
5. Step 5: Solve for x
   x = 375,014,163,456/280,492
6. Step 6: Final answer
   x = 1,336,987.02