Finding the Third Proportional to 8,401,568 and 12,679,634

Step by Step Solution

1. Step 1: Write the proportion equation
   8,401,568 : 12,679,634 = 12,679,634 : x
2. Step 2: Convert to fraction form
   8,401,568/12,679,634 = 12,679,634/x
3. Step 3: Cross multiply
   8,401,568x = 12,679,634 × 12,679,634
4. Step 4: Simplify right side
   8,401,568x = 160,773,118,373,956
5. Step 5: Solve for x
   x = 160,773,118,373,956/8,401,568
6. Step 6: Final answer
   x = 19,136,084.88