Finding the Third Proportional to 217,836 and 471,860

Step by Step Solution

1. Step 1: Write the proportion equation
   217,836 : 471,860 = 471,860 : x
2. Step 2: Convert to fraction form
   217,836/471,860 = 471,860/x
3. Step 3: Cross multiply
   217,836x = 471,860 × 471,860
4. Step 4: Simplify right side
   217,836x = 222,651,859,600
5. Step 5: Solve for x
   x = 222,651,859,600/217,836
6. Step 6: Final answer
   x = 1,022,107.73