Finding the Third Proportional to 3,971,510 and 8,572,888

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971,510 : 8,572,888 = 8,572,888 : x
2. Step 2: Convert to fraction form
   3,971,510/8,572,888 = 8,572,888/x
3. Step 3: Cross multiply
   3,971,510x = 8,572,888 × 8,572,888
4. Step 4: Simplify right side
   3,971,510x = 73,494,408,660,544
5. Step 5: Solve for x
   x = 73,494,408,660,544/3,971,510
6. Step 6: Final answer
   x = 18,505,406.93