Finding the Third Proportional to 315,636 and 443,967

Step by Step Solution

1. Step 1: Write the proportion equation
   315,636 : 443,967 = 443,967 : x
2. Step 2: Convert to fraction form
   315,636/443,967 = 443,967/x
3. Step 3: Cross multiply
   315,636x = 443,967 × 443,967
4. Step 4: Simplify right side
   315,636x = 197,106,697,089
5. Step 5: Solve for x
   x = 197,106,697,089/315,636
6. Step 6: Final answer
   x = 624,474.70