Finding the Third Proportional to 221,618 and 474,772

Step by Step Solution

1. Step 1: Write the proportion equation
   221,618 : 474,772 = 474,772 : x
2. Step 2: Convert to fraction form
   221,618/474,772 = 474,772/x
3. Step 3: Cross multiply
   221,618x = 474,772 × 474,772
4. Step 4: Simplify right side
   221,618x = 225,408,451,984
5. Step 5: Solve for x
   x = 225,408,451,984/221,618
6. Step 6: Final answer
   x = 1,017,103.54