Finding the Third Proportional to 218,916 and 472,760

Step by Step Solution

1. Step 1: Write the proportion equation
   218,916 : 472,760 = 472,760 : x
2. Step 2: Convert to fraction form
   218,916/472,760 = 472,760/x
3. Step 3: Cross multiply
   218,916x = 472,760 × 472,760
4. Step 4: Simplify right side
   218,916x = 223,502,017,600
5. Step 5: Solve for x
   x = 223,502,017,600/218,916
6. Step 6: Final answer
   x = 1,020,948.75