Finding the Third Proportional to 315,606 and 443,922

Step by Step Solution

1. Step 1: Write the proportion equation
   315,606 : 443,922 = 443,922 : x
2. Step 2: Convert to fraction form
   315,606/443,922 = 443,922/x
3. Step 3: Cross multiply
   315,606x = 443,922 × 443,922
4. Step 4: Simplify right side
   315,606x = 197,066,742,084
5. Step 5: Solve for x
   x = 197,066,742,084/315,606
6. Step 6: Final answer
   x = 624,407.46