Finding the Third Proportional to 3,867,557 and 8,196,144

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867,557 : 8,196,144 = 8,196,144 : x
2. Step 2: Convert to fraction form
   3,867,557/8,196,144 = 8,196,144/x
3. Step 3: Cross multiply
   3,867,557x = 8,196,144 × 8,196,144
4. Step 4: Simplify right side
   3,867,557x = 67,176,776,468,736
5. Step 5: Solve for x
   x = 67,176,776,468,736/3,867,557
6. Step 6: Final answer
   x = 17,369,304.83