Finding the Third Proportional to 389,380 and 844,856

Step by Step Solution

1. Step 1: Write the proportion equation
   389,380 : 844,856 = 844,856 : x
2. Step 2: Convert to fraction form
   389,380/844,856 = 844,856/x
3. Step 3: Cross multiply
   389,380x = 844,856 × 844,856
4. Step 4: Simplify right side
   389,380x = 713,781,660,736
5. Step 5: Solve for x
   x = 713,781,660,736/389,380
6. Step 6: Final answer
   x = 1,833,123.58