Finding the Third Proportional to 443,864 and 628,056

Step by Step Solution

1. Step 1: Write the proportion equation
   443,864 : 628,056 = 628,056 : x
2. Step 2: Convert to fraction form
   443,864/628,056 = 628,056/x
3. Step 3: Cross multiply
   443,864x = 628,056 × 628,056
4. Step 4: Simplify right side
   443,864x = 394,454,339,136
5. Step 5: Solve for x
   x = 394,454,339,136/443,864
6. Step 6: Final answer
   x = 888,682.88