Finding the Third Proportional to 443,673 and 665,293.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,673 : 665,293.50 = 665,293.50 : x
2. Step 2: Convert to fraction form
   443,673/665,293.50 = 665,293.50/x
3. Step 3: Cross multiply
   443,673x = 665,293.50 × 665,293.50
4. Step 4: Simplify right side
   443,673x = 442,615,441,142.25
5. Step 5: Solve for x
   x = 442,615,441,142.25/443,673
6. Step 6: Final answer
   x = 997,616.36