Finding the Third Proportional to 276,600 and 443,628

Step by Step Solution

1. Step 1: Write the proportion equation
   276,600 : 443,628 = 443,628 : x
2. Step 2: Convert to fraction form
   276,600/443,628 = 443,628/x
3. Step 3: Cross multiply
   276,600x = 443,628 × 443,628
4. Step 4: Simplify right side
   276,600x = 196,805,802,384
5. Step 5: Solve for x
   x = 196,805,802,384/276,600
6. Step 6: Final answer
   x = 711,517.72