Finding the Third Proportional to 3,578,852 and 5,420,400

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578,852 : 5,420,400 = 5,420,400 : x
2. Step 2: Convert to fraction form
   3,578,852/5,420,400 = 5,420,400/x
3. Step 3: Cross multiply
   3,578,852x = 5,420,400 × 5,420,400
4. Step 4: Simplify right side
   3,578,852x = 29,380,736,160,000
5. Step 5: Solve for x
   x = 29,380,736,160,000/3,578,852
6. Step 6: Final answer
   x = 8,209,542.10