Finding the Third Proportional to 218,514 and 472,020

Step by Step Solution

1. Step 1: Write the proportion equation
   218,514 : 472,020 = 472,020 : x
2. Step 2: Convert to fraction form
   218,514/472,020 = 472,020/x
3. Step 3: Cross multiply
   218,514x = 472,020 × 472,020
4. Step 4: Simplify right side
   218,514x = 222,802,880,400
5. Step 5: Solve for x
   x = 222,802,880,400/218,514
6. Step 6: Final answer
   x = 1,019,627.49