Finding the Third Proportional to 2,161,786 and 4,692,788

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,786 : 4,692,788 = 4,692,788 : x
2. Step 2: Convert to fraction form
   2,161,786/4,692,788 = 4,692,788/x
3. Step 3: Cross multiply
   2,161,786x = 4,692,788 × 4,692,788
4. Step 4: Simplify right side
   2,161,786x = 22,022,259,212,944
5. Step 5: Solve for x
   x = 22,022,259,212,944/2,161,786
6. Step 6: Final answer
   x = 10,187,067.18