Finding the Third Proportional to 218,760 and 472,512

Step by Step Solution

1. Step 1: Write the proportion equation
   218,760 : 472,512 = 472,512 : x
2. Step 2: Convert to fraction form
   218,760/472,512 = 472,512/x
3. Step 3: Cross multiply
   218,760x = 472,512 × 472,512
4. Step 4: Simplify right side
   218,760x = 223,267,590,144
5. Step 5: Solve for x
   x = 223,267,590,144/218,760
6. Step 6: Final answer
   x = 1,020,605.18