Finding the Third Proportional to 219,896 and 479,288

Step by Step Solution

1. Step 1: Write the proportion equation
   219,896 : 479,288 = 479,288 : x
2. Step 2: Convert to fraction form
   219,896/479,288 = 479,288/x
3. Step 3: Cross multiply
   219,896x = 479,288 × 479,288
4. Step 4: Simplify right side
   219,896x = 229,716,986,944
5. Step 5: Solve for x
   x = 229,716,986,944/219,896
6. Step 6: Final answer
   x = 1,044,661.96