Finding the Third Proportional to 216,268 and 474,638

Step by Step Solution

1. Step 1: Write the proportion equation
   216,268 : 474,638 = 474,638 : x
2. Step 2: Convert to fraction form
   216,268/474,638 = 474,638/x
3. Step 3: Cross multiply
   216,268x = 474,638 × 474,638
4. Step 4: Simplify right side
   216,268x = 225,281,231,044
5. Step 5: Solve for x
   x = 225,281,231,044/216,268
6. Step 6: Final answer
   x = 1,041,676.21