Finding the Third Proportional to 3,979,455 and 8,526,720

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979,455 : 8,526,720 = 8,526,720 : x
2. Step 2: Convert to fraction form
   3,979,455/8,526,720 = 8,526,720/x
3. Step 3: Cross multiply
   3,979,455x = 8,526,720 × 8,526,720
4. Step 4: Simplify right side
   3,979,455x = 72,704,953,958,400
5. Step 5: Solve for x
   x = 72,704,953,958,400/3,979,455
6. Step 6: Final answer
   x = 18,270,078.18