Finding the Third Proportional to 443,677.50 and 665,300.25

Step by Step Solution

1. Step 1: Write the proportion equation
   443,677.50 : 665,300.25 = 665,300.25 : x
2. Step 2: Convert to fraction form
   443,677.50/665,300.25 = 665,300.25/x
3. Step 3: Cross multiply
   443,677.50x = 665,300.25 × 665,300.25
4. Step 4: Simplify right side
   443,677.50x = 442,624,422,650.06
5. Step 5: Solve for x
   x = 442,624,422,650.06/443,677.50
6. Step 6: Final answer
   x = 997,626.48