Finding the Third Proportional to 395,658 and 838,404

Step by Step Solution

1. Step 1: Write the proportion equation
   395,658 : 838,404 = 838,404 : x
2. Step 2: Convert to fraction form
   395,658/838,404 = 838,404/x
3. Step 3: Cross multiply
   395,658x = 838,404 × 838,404
4. Step 4: Simplify right side
   395,658x = 702,921,267,216
5. Step 5: Solve for x
   x = 702,921,267,216/395,658
6. Step 6: Final answer
   x = 1,776,588.03