Finding the Third Proportional to 8,309,742 and 12,764,781

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,742 : 12,764,781 = 12,764,781 : x
2. Step 2: Convert to fraction form
   8,309,742/12,764,781 = 12,764,781/x
3. Step 3: Cross multiply
   8,309,742x = 12,764,781 × 12,764,781
4. Step 4: Simplify right side
   8,309,742x = 162,939,633,977,961
5. Step 5: Solve for x
   x = 162,939,633,977,961/8,309,742
6. Step 6: Final answer
   x = 19,608,266.29