Finding the Third Proportional to 2,821,804 and 4,239,138

Step by Step Solution

1. Step 1: Write the proportion equation
   2,821,804 : 4,239,138 = 4,239,138 : x
2. Step 2: Convert to fraction form
   2,821,804/4,239,138 = 4,239,138/x
3. Step 3: Cross multiply
   2,821,804x = 4,239,138 × 4,239,138
4. Step 4: Simplify right side
   2,821,804x = 17,970,290,983,044
5. Step 5: Solve for x
   x = 17,970,290,983,044/2,821,804
6. Step 6: Final answer
   x = 6,368,369.66