Finding the Third Proportional to 3,881,907 and 8,165,391

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881,907 : 8,165,391 = 8,165,391 : x
2. Step 2: Convert to fraction form
   3,881,907/8,165,391 = 8,165,391/x
3. Step 3: Cross multiply
   3,881,907x = 8,165,391 × 8,165,391
4. Step 4: Simplify right side
   3,881,907x = 66,673,610,182,881
5. Step 5: Solve for x
   x = 66,673,610,182,881/3,881,907
6. Step 6: Final answer
   x = 17,175,478.49