Finding the Third Proportional to 3,955,797 and 8,121,303

Step by Step Solution

1. Step 1: Write the proportion equation
   3,955,797 : 8,121,303 = 8,121,303 : x
2. Step 2: Convert to fraction form
   3,955,797/8,121,303 = 8,121,303/x
3. Step 3: Cross multiply
   3,955,797x = 8,121,303 × 8,121,303
4. Step 4: Simplify right side
   3,955,797x = 65,955,562,417,809
5. Step 5: Solve for x
   x = 65,955,562,417,809/3,955,797
6. Step 6: Final answer
   x = 16,673,141.32