Finding the Third Proportional to 279,738 and 443,628

Step by Step Solution

1. Step 1: Write the proportion equation
   279,738 : 443,628 = 443,628 : x
2. Step 2: Convert to fraction form
   279,738/443,628 = 443,628/x
3. Step 3: Cross multiply
   279,738x = 443,628 × 443,628
4. Step 4: Simplify right side
   279,738x = 196,805,802,384
5. Step 5: Solve for x
   x = 196,805,802,384/279,738
6. Step 6: Final answer
   x = 703,536.17