Finding the Third Proportional to 3,906,164 and 8,557,072

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906,164 : 8,557,072 = 8,557,072 : x
2. Step 2: Convert to fraction form
   3,906,164/8,557,072 = 8,557,072/x
3. Step 3: Cross multiply
   3,906,164x = 8,557,072 × 8,557,072
4. Step 4: Simplify right side
   3,906,164x = 73,223,481,213,184
5. Step 5: Solve for x
   x = 73,223,481,213,184/3,906,164
6. Step 6: Final answer
   x = 18,745,623.89