Finding the Third Proportional to 3,645,981 and 7,857,180

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,981 : 7,857,180 = 7,857,180 : x
2. Step 2: Convert to fraction form
   3,645,981/7,857,180 = 7,857,180/x
3. Step 3: Cross multiply
   3,645,981x = 7,857,180 × 7,857,180
4. Step 4: Simplify right side
   3,645,981x = 61,735,277,552,400
5. Step 5: Solve for x
   x = 61,735,277,552,400/3,645,981
6. Step 6: Final answer
   x = 16,932,418.89