Finding the Third Proportional to 217,838 and 471,868

Step by Step Solution

1. Step 1: Write the proportion equation
   217,838 : 471,868 = 471,868 : x
2. Step 2: Convert to fraction form
   217,838/471,868 = 471,868/x
3. Step 3: Cross multiply
   217,838x = 471,868 × 471,868
4. Step 4: Simplify right side
   217,838x = 222,659,409,424
5. Step 5: Solve for x
   x = 222,659,409,424/217,838
6. Step 6: Final answer
   x = 1,022,133.00