Finding the Third Proportional to 3,864,171 and 8,493,270

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864,171 : 8,493,270 = 8,493,270 : x
2. Step 2: Convert to fraction form
   3,864,171/8,493,270 = 8,493,270/x
3. Step 3: Cross multiply
   3,864,171x = 8,493,270 × 8,493,270
4. Step 4: Simplify right side
   3,864,171x = 72,135,635,292,900
5. Step 5: Solve for x
   x = 72,135,635,292,900/3,864,171
6. Step 6: Final answer
   x = 18,667,816.54