Finding the Third Proportional to 3,979,686 and 8,527,164

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979,686 : 8,527,164 = 8,527,164 : x
2. Step 2: Convert to fraction form
   3,979,686/8,527,164 = 8,527,164/x
3. Step 3: Cross multiply
   3,979,686x = 8,527,164 × 8,527,164
4. Step 4: Simplify right side
   3,979,686x = 72,712,525,882,896
5. Step 5: Solve for x
   x = 72,712,525,882,896/3,979,686
6. Step 6: Final answer
   x = 18,270,920.34