Finding the Third Proportional to 853,540 and 1,839,408

Step by Step Solution

1. Step 1: Write the proportion equation
   853,540 : 1,839,408 = 1,839,408 : x
2. Step 2: Convert to fraction form
   853,540/1,839,408 = 1,839,408/x
3. Step 3: Cross multiply
   853,540x = 1,839,408 × 1,839,408
4. Step 4: Simplify right side
   853,540x = 3,383,421,790,464
5. Step 5: Solve for x
   x = 3,383,421,790,464/853,540
6. Step 6: Final answer
   x = 3,963,987.38