Finding the Third Proportional to 3,955,808 and 8,121,324

Step by Step Solution

1. Step 1: Write the proportion equation
   3,955,808 : 8,121,324 = 8,121,324 : x
2. Step 2: Convert to fraction form
   3,955,808/8,121,324 = 8,121,324/x
3. Step 3: Cross multiply
   3,955,808x = 8,121,324 × 8,121,324
4. Step 4: Simplify right side
   3,955,808x = 65,955,903,512,976
5. Step 5: Solve for x
   x = 65,955,903,512,976/3,955,808
6. Step 6: Final answer
   x = 16,673,181.18