Finding the Third Proportional to 8,309,709 and 12,764,730

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,709 : 12,764,730 = 12,764,730 : x
2. Step 2: Convert to fraction form
   8,309,709/12,764,730 = 12,764,730/x
3. Step 3: Cross multiply
   8,309,709x = 12,764,730 × 12,764,730
4. Step 4: Simplify right side
   8,309,709x = 162,938,331,972,900
5. Step 5: Solve for x
   x = 162,938,331,972,900/8,309,709
6. Step 6: Final answer
   x = 19,608,187.48