Finding the Third Proportional to 10,489,662 and 16,200,405

Step by Step Solution

1. Step 1: Write the proportion equation
   10,489,662 : 16,200,405 = 16,200,405 : x
2. Step 2: Convert to fraction form
   10,489,662/16,200,405 = 16,200,405/x
3. Step 3: Cross multiply
   10,489,662x = 16,200,405 × 16,200,405
4. Step 4: Simplify right side
   10,489,662x = 262,453,122,164,025
5. Step 5: Solve for x
   x = 262,453,122,164,025/10,489,662
6. Step 6: Final answer
   x = 25,020,169.59