Finding the Third Proportional to 8,636,736 and 12,907,504

Step by Step Solution

1. Step 1: Write the proportion equation
   8,636,736 : 12,907,504 = 12,907,504 : x
2. Step 2: Convert to fraction form
   8,636,736/12,907,504 = 12,907,504/x
3. Step 3: Cross multiply
   8,636,736x = 12,907,504 × 12,907,504
4. Step 4: Simplify right side
   8,636,736x = 166,603,659,510,016
5. Step 5: Solve for x
   x = 166,603,659,510,016/8,636,736
6. Step 6: Final answer
   x = 19,290,118.34