Finding the Third Proportional to 389,758.50 and 837,540

Step by Step Solution

1. Step 1: Write the proportion equation
   389,758.50 : 837,540 = 837,540 : x
2. Step 2: Convert to fraction form
   389,758.50/837,540 = 837,540/x
3. Step 3: Cross multiply
   389,758.50x = 837,540 × 837,540
4. Step 4: Simplify right side
   389,758.50x = 701,473,251,600
5. Step 5: Solve for x
   x = 701,473,251,600/389,758.50
6. Step 6: Final answer
   x = 1,799,763.83