Finding the Third Proportional to 16,489,648 and 21,683,814

Step by Step Solution

1. Step 1: Write the proportion equation
   16,489,648 : 21,683,814 = 21,683,814 : x
2. Step 2: Convert to fraction form
   16,489,648/21,683,814 = 21,683,814/x
3. Step 3: Cross multiply
   16,489,648x = 21,683,814 × 21,683,814
4. Step 4: Simplify right side
   16,489,648x = 470,187,789,586,596
5. Step 5: Solve for x
   x = 470,187,789,586,596/16,489,648
6. Step 6: Final answer
   x = 28,514,119.26