Finding the Third Proportional to 315,587 and 443,896

Step by Step Solution

1. Step 1: Write the proportion equation
   315,587 : 443,896 = 443,896 : x
2. Step 2: Convert to fraction form
   315,587/443,896 = 443,896/x
3. Step 3: Cross multiply
   315,587x = 443,896 × 443,896
4. Step 4: Simplify right side
   315,587x = 197,043,658,816
5. Step 5: Solve for x
   x = 197,043,658,816/315,587
6. Step 6: Final answer
   x = 624,371.91