Finding the Third Proportional to 2,840,400 and 3,995,208

Step by Step Solution

1. Step 1: Write the proportion equation
   2,840,400 : 3,995,208 = 3,995,208 : x
2. Step 2: Convert to fraction form
   2,840,400/3,995,208 = 3,995,208/x
3. Step 3: Cross multiply
   2,840,400x = 3,995,208 × 3,995,208
4. Step 4: Simplify right side
   2,840,400x = 15,961,686,963,264
5. Step 5: Solve for x
   x = 15,961,686,963,264/2,840,400
6. Step 6: Final answer
   x = 5,619,520.83