Finding the Third Proportional to 218,412 and 477,234

Step by Step Solution

1. Step 1: Write the proportion equation
   218,412 : 477,234 = 477,234 : x
2. Step 2: Convert to fraction form
   218,412/477,234 = 477,234/x
3. Step 3: Cross multiply
   218,412x = 477,234 × 477,234
4. Step 4: Simplify right side
   218,412x = 227,752,290,756
5. Step 5: Solve for x
   x = 227,752,290,756/218,412
6. Step 6: Final answer
   x = 1,042,764.55