Finding the Third Proportional to 218,928 and 472,056

Step by Step Solution

1. Step 1: Write the proportion equation
   218,928 : 472,056 = 472,056 : x
2. Step 2: Convert to fraction form
   218,928/472,056 = 472,056/x
3. Step 3: Cross multiply
   218,928x = 472,056 × 472,056
4. Step 4: Simplify right side
   218,928x = 222,836,867,136
5. Step 5: Solve for x
   x = 222,836,867,136/218,928
6. Step 6: Final answer
   x = 1,017,854.58