Finding the Third Proportional to 279,839 and 443,828

Step by Step Solution

1. Step 1: Write the proportion equation
   279,839 : 443,828 = 443,828 : x
2. Step 2: Convert to fraction form
   279,839/443,828 = 443,828/x
3. Step 3: Cross multiply
   279,839x = 443,828 × 443,828
4. Step 4: Simplify right side
   279,839x = 196,983,293,584
5. Step 5: Solve for x
   x = 196,983,293,584/279,839
6. Step 6: Final answer
   x = 703,916.51