Finding the Third Proportional to 3,578,977 and 5,420,562

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578,977 : 5,420,562 = 5,420,562 : x
2. Step 2: Convert to fraction form
   3,578,977/5,420,562 = 5,420,562/x
3. Step 3: Cross multiply
   3,578,977x = 5,420,562 × 5,420,562
4. Step 4: Simplify right side
   3,578,977x = 29,382,492,395,844
5. Step 5: Solve for x
   x = 29,382,492,395,844/3,578,977
6. Step 6: Final answer
   x = 8,209,746.08