Finding the Third Proportional to 219,448.50 and 479,109

Step by Step Solution

1. Step 1: Write the proportion equation
   219,448.50 : 479,109 = 479,109 : x
2. Step 2: Convert to fraction form
   219,448.50/479,109 = 479,109/x
3. Step 3: Cross multiply
   219,448.50x = 479,109 × 479,109
4. Step 4: Simplify right side
   219,448.50x = 229,545,433,881
5. Step 5: Solve for x
   x = 229,545,433,881/219,448.50
6. Step 6: Final answer
   x = 1,046,010.49