Finding the Third Proportional to 3,867,550 and 8,196,121

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867,550 : 8,196,121 = 8,196,121 : x
2. Step 2: Convert to fraction form
   3,867,550/8,196,121 = 8,196,121/x
3. Step 3: Cross multiply
   3,867,550x = 8,196,121 × 8,196,121
4. Step 4: Simplify right side
   3,867,550x = 67,176,399,446,641
5. Step 5: Solve for x
   x = 67,176,399,446,641/3,867,550
6. Step 6: Final answer
   x = 17,369,238.78