Finding the Third Proportional to 8,309,736 and 12,764,772

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,736 : 12,764,772 = 12,764,772 : x
2. Step 2: Convert to fraction form
   8,309,736/12,764,772 = 12,764,772/x
3. Step 3: Cross multiply
   8,309,736x = 12,764,772 × 12,764,772
4. Step 4: Simplify right side
   8,309,736x = 162,939,404,211,984
5. Step 5: Solve for x
   x = 162,939,404,211,984/8,309,736
6. Step 6: Final answer
   x = 19,608,252.80