Finding the Third Proportional to 3,994,770 and 8,736,857

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994,770 : 8,736,857 = 8,736,857 : x
2. Step 2: Convert to fraction form
   3,994,770/8,736,857 = 8,736,857/x
3. Step 3: Cross multiply
   3,994,770x = 8,736,857 × 8,736,857
4. Step 4: Simplify right side
   3,994,770x = 76,332,670,238,449
5. Step 5: Solve for x
   x = 76,332,670,238,449/3,994,770
6. Step 6: Final answer
   x = 19,108,151.47