Finding the Third Proportional to 218,058 and 477,588

Step by Step Solution

1. Step 1: Write the proportion equation
   218,058 : 477,588 = 477,588 : x
2. Step 2: Convert to fraction form
   218,058/477,588 = 477,588/x
3. Step 3: Cross multiply
   218,058x = 477,588 × 477,588
4. Step 4: Simplify right side
   218,058x = 228,090,297,744
5. Step 5: Solve for x
   x = 228,090,297,744/218,058
6. Step 6: Final answer
   x = 1,046,007.47