Finding the Third Proportional to 298,816 and 443,984

Step by Step Solution

1. Step 1: Write the proportion equation
   298,816 : 443,984 = 443,984 : x
2. Step 2: Convert to fraction form
   298,816/443,984 = 443,984/x
3. Step 3: Cross multiply
   298,816x = 443,984 × 443,984
4. Step 4: Simplify right side
   298,816x = 197,121,792,256
5. Step 5: Solve for x
   x = 197,121,792,256/298,816
6. Step 6: Final answer
   x = 659,676.16