Finding the Third Proportional to 3,977,948 and 8,589,760

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,948 : 8,589,760 = 8,589,760 : x
2. Step 2: Convert to fraction form
   3,977,948/8,589,760 = 8,589,760/x
3. Step 3: Cross multiply
   3,977,948x = 8,589,760 × 8,589,760
4. Step 4: Simplify right side
   3,977,948x = 73,783,976,857,600
5. Step 5: Solve for x
   x = 73,783,976,857,600/3,977,948
6. Step 6: Final answer
   x = 18,548,250.72