Finding the Third Proportional to 3,966,814 and 8,142,716

Step by Step Solution

1. Step 1: Write the proportion equation
   3,966,814 : 8,142,716 = 8,142,716 : x
2. Step 2: Convert to fraction form
   3,966,814/8,142,716 = 8,142,716/x
3. Step 3: Cross multiply
   3,966,814x = 8,142,716 × 8,142,716
4. Step 4: Simplify right side
   3,966,814x = 66,303,823,856,656
5. Step 5: Solve for x
   x = 66,303,823,856,656/3,966,814
6. Step 6: Final answer
   x = 16,714,628.88