Finding the Third Proportional to 218,992 and 472,168

Step by Step Solution

1. Step 1: Write the proportion equation
   218,992 : 472,168 = 472,168 : x
2. Step 2: Convert to fraction form
   218,992/472,168 = 472,168/x
3. Step 3: Cross multiply
   218,992x = 472,168 × 472,168
4. Step 4: Simplify right side
   218,992x = 222,942,620,224
5. Step 5: Solve for x
   x = 222,942,620,224/218,992
6. Step 6: Final answer
   x = 1,018,040.02