Finding the Third Proportional to 8,189,538 and 12,845,799

Step by Step Solution

1. Step 1: Write the proportion equation
   8,189,538 : 12,845,799 = 12,845,799 : x
2. Step 2: Convert to fraction form
   8,189,538/12,845,799 = 12,845,799/x
3. Step 3: Cross multiply
   8,189,538x = 12,845,799 × 12,845,799
4. Step 4: Simplify right side
   8,189,538x = 165,014,551,948,401
5. Step 5: Solve for x
   x = 165,014,551,948,401/8,189,538
6. Step 6: Final answer
   x = 20,149,433.58