Finding the Third Proportional to 279,715 and 443,617

Step by Step Solution

1. Step 1: Write the proportion equation
   279,715 : 443,617 = 443,617 : x
2. Step 2: Convert to fraction form
   279,715/443,617 = 443,617/x
3. Step 3: Cross multiply
   279,715x = 443,617 × 443,617
4. Step 4: Simplify right side
   279,715x = 196,796,042,689
5. Step 5: Solve for x
   x = 196,796,042,689/279,715
6. Step 6: Final answer
   x = 703,559.13