Finding the Third Proportional to 228,456 and 491,920

Step by Step Solution

1. Step 1: Write the proportion equation
   228,456 : 491,920 = 491,920 : x
2. Step 2: Convert to fraction form
   228,456/491,920 = 491,920/x
3. Step 3: Cross multiply
   228,456x = 491,920 × 491,920
4. Step 4: Simplify right side
   228,456x = 241,985,286,400
5. Step 5: Solve for x
   x = 241,985,286,400/228,456
6. Step 6: Final answer
   x = 1,059,220.53