Finding the Third Proportional to 819,980 and 1,801,392

Step by Step Solution

1. Step 1: Write the proportion equation
   819,980 : 1,801,392 = 1,801,392 : x
2. Step 2: Convert to fraction form
   819,980/1,801,392 = 1,801,392/x
3. Step 3: Cross multiply
   819,980x = 1,801,392 × 1,801,392
4. Step 4: Simplify right side
   819,980x = 3,245,013,137,664
5. Step 5: Solve for x
   x = 3,245,013,137,664/819,980
6. Step 6: Final answer
   x = 3,957,429.62