Finding the Third Proportional to 2,640,066 and 4,117,779

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640,066 : 4,117,779 = 4,117,779 : x
2. Step 2: Convert to fraction form
   2,640,066/4,117,779 = 4,117,779/x
3. Step 3: Cross multiply
   2,640,066x = 4,117,779 × 4,117,779
4. Step 4: Simplify right side
   2,640,066x = 16,956,103,892,841
5. Step 5: Solve for x
   x = 16,956,103,892,841/2,640,066
6. Step 6: Final answer
   x = 6,422,606.06