Finding the Third Proportional to 389,401.50 and 836,974.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,401.50 : 836,974.50 = 836,974.50 : x
2. Step 2: Convert to fraction form
   389,401.50/836,974.50 = 836,974.50/x
3. Step 3: Cross multiply
   389,401.50x = 836,974.50 × 836,974.50
4. Step 4: Simplify right side
   389,401.50x = 700,526,313,650.25
5. Step 5: Solve for x
   x = 700,526,313,650.25/389,401.50
6. Step 6: Final answer
   x = 1,798,982.06