Finding the Third Proportional to 8,617,443 and 13,105,215

Step by Step Solution

1. Step 1: Write the proportion equation
   8,617,443 : 13,105,215 = 13,105,215 : x
2. Step 2: Convert to fraction form
   8,617,443/13,105,215 = 13,105,215/x
3. Step 3: Cross multiply
   8,617,443x = 13,105,215 × 13,105,215
4. Step 4: Simplify right side
   8,617,443x = 171,746,660,196,225
5. Step 5: Solve for x
   x = 171,746,660,196,225/8,617,443
6. Step 6: Final answer
   x = 19,930,118.50