Finding the Third Proportional to 4,212,867 and 9,065,643

Step by Step Solution

1. Step 1: Write the proportion equation
   4,212,867 : 9,065,643 = 9,065,643 : x
2. Step 2: Convert to fraction form
   4,212,867/9,065,643 = 9,065,643/x
3. Step 3: Cross multiply
   4,212,867x = 9,065,643 × 9,065,643
4. Step 4: Simplify right side
   4,212,867x = 82,185,883,003,449
5. Step 5: Solve for x
   x = 82,185,883,003,449/4,212,867
6. Step 6: Final answer
   x = 19,508,302.30