Finding the Third Proportional to 443,679 and 665,301.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,679 : 665,301.50 = 665,301.50 : x
2. Step 2: Convert to fraction form
   443,679/665,301.50 = 665,301.50/x
3. Step 3: Cross multiply
   443,679x = 665,301.50 × 665,301.50
4. Step 4: Simplify right side
   443,679x = 442,626,085,902.25
5. Step 5: Solve for x
   x = 442,626,085,902.25/443,679
6. Step 6: Final answer
   x = 997,626.86