Finding the Third Proportional to 3,975,817 and 8,655,544

Step by Step Solution

1. Step 1: Write the proportion equation
   3,975,817 : 8,655,544 = 8,655,544 : x
2. Step 2: Convert to fraction form
   3,975,817/8,655,544 = 8,655,544/x
3. Step 3: Cross multiply
   3,975,817x = 8,655,544 × 8,655,544
4. Step 4: Simplify right side
   3,975,817x = 74,918,441,935,936
5. Step 5: Solve for x
   x = 74,918,441,935,936/3,975,817
6. Step 6: Final answer
   x = 18,843,533.78