Finding the Third Proportional to 219,618 and 479,512

Step by Step Solution

1. Step 1: Write the proportion equation
   219,618 : 479,512 = 479,512 : x
2. Step 2: Convert to fraction form
   219,618/479,512 = 479,512/x
3. Step 3: Cross multiply
   219,618x = 479,512 × 479,512
4. Step 4: Simplify right side
   219,618x = 229,931,758,144
5. Step 5: Solve for x
   x = 229,931,758,144/219,618
6. Step 6: Final answer
   x = 1,046,962.26