Finding the Third Proportional to 996,840 and 2,124,144

Step by Step Solution

1. Step 1: Write the proportion equation
   996,840 : 2,124,144 = 2,124,144 : x
2. Step 2: Convert to fraction form
   996,840/2,124,144 = 2,124,144/x
3. Step 3: Cross multiply
   996,840x = 2,124,144 × 2,124,144
4. Step 4: Simplify right side
   996,840x = 4,511,987,732,736
5. Step 5: Solve for x
   x = 4,511,987,732,736/996,840
6. Step 6: Final answer
   x = 4,526,290.81