Finding the Third Proportional to 3,774,684 and 8,212,908

Step by Step Solution

1. Step 1: Write the proportion equation
   3,774,684 : 8,212,908 = 8,212,908 : x
2. Step 2: Convert to fraction form
   3,774,684/8,212,908 = 8,212,908/x
3. Step 3: Cross multiply
   3,774,684x = 8,212,908 × 8,212,908
4. Step 4: Simplify right side
   3,774,684x = 67,451,857,816,464
5. Step 5: Solve for x
   x = 67,451,857,816,464/3,774,684
6. Step 6: Final answer
   x = 17,869,537.64