Finding the Third Proportional to 315,591 and 443,901

Step by Step Solution

1. Step 1: Write the proportion equation
   315,591 : 443,901 = 443,901 : x
2. Step 2: Convert to fraction form
   315,591/443,901 = 443,901/x
3. Step 3: Cross multiply
   315,591x = 443,901 × 443,901
4. Step 4: Simplify right side
   315,591x = 197,048,097,801
5. Step 5: Solve for x
   x = 197,048,097,801/315,591
6. Step 6: Final answer
   x = 624,378.06