Finding the Third Proportional to 227,120 and 477,780

Step by Step Solution

1. Step 1: Write the proportion equation
   227,120 : 477,780 = 477,780 : x
2. Step 2: Convert to fraction form
   227,120/477,780 = 477,780/x
3. Step 3: Cross multiply
   227,120x = 477,780 × 477,780
4. Step 4: Simplify right side
   227,120x = 228,273,728,400
5. Step 5: Solve for x
   x = 228,273,728,400/227,120
6. Step 6: Final answer
   x = 1,005,079.82