Finding the Third Proportional to 219,664 and 479,612

Step by Step Solution

1. Step 1: Write the proportion equation
   219,664 : 479,612 = 479,612 : x
2. Step 2: Convert to fraction form
   219,664/479,612 = 479,612/x
3. Step 3: Cross multiply
   219,664x = 479,612 × 479,612
4. Step 4: Simplify right side
   219,664x = 230,027,670,544
5. Step 5: Solve for x
   x = 230,027,670,544/219,664
6. Step 6: Final answer
   x = 1,047,179.65