Finding the Third Proportional to 215,668 and 469,118

Step by Step Solution

1. Step 1: Write the proportion equation
   215,668 : 469,118 = 469,118 : x
2. Step 2: Convert to fraction form
   215,668/469,118 = 469,118/x
3. Step 3: Cross multiply
   215,668x = 469,118 × 469,118
4. Step 4: Simplify right side
   215,668x = 220,071,697,924
5. Step 5: Solve for x
   x = 220,071,697,924/215,668
6. Step 6: Final answer
   x = 1,020,418.87