Finding the Third Proportional to 389,892 and 837,800

Step by Step Solution

1. Step 1: Write the proportion equation
   389,892 : 837,800 = 837,800 : x
2. Step 2: Convert to fraction form
   389,892/837,800 = 837,800/x
3. Step 3: Cross multiply
   389,892x = 837,800 × 837,800
4. Step 4: Simplify right side
   389,892x = 701,908,840,000
5. Step 5: Solve for x
   x = 701,908,840,000/389,892
6. Step 6: Final answer
   x = 1,800,264.79