Finding the Third Proportional to 218,763 and 478,016

Step by Step Solution

1. Step 1: Write the proportion equation
   218,763 : 478,016 = 478,016 : x
2. Step 2: Convert to fraction form
   218,763/478,016 = 478,016/x
3. Step 3: Cross multiply
   218,763x = 478,016 × 478,016
4. Step 4: Simplify right side
   218,763x = 228,499,296,256
5. Step 5: Solve for x
   x = 228,499,296,256/218,763
6. Step 6: Final answer
   x = 1,044,506.14