Finding the Third Proportional to 393,401.81 and 844,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,401.81 : 844,141.50 = 844,141.50 : x
2. Step 2: Convert to fraction form
   393,401.81/844,141.50 = 844,141.50/x
3. Step 3: Cross multiply
   393,401.81x = 844,141.50 × 844,141.50
4. Step 4: Simplify right side
   393,401.81x = 712,574,872,022.25
5. Step 5: Solve for x
   x = 712,574,872,022.25/393,401.81
6. Step 6: Final answer
   x = 1,811,315.68