Finding the Third Proportional to 315,608 and 443,924

Step by Step Solution

1. Step 1: Write the proportion equation
   315,608 : 443,924 = 443,924 : x
2. Step 2: Convert to fraction form
   315,608/443,924 = 443,924/x
3. Step 3: Cross multiply
   315,608x = 443,924 × 443,924
4. Step 4: Simplify right side
   315,608x = 197,068,517,776
5. Step 5: Solve for x
   x = 197,068,517,776/315,608
6. Step 6: Final answer
   x = 624,409.13