Finding the Third Proportional to 1,540,678 and 3,435,407

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540,678 : 3,435,407 = 3,435,407 : x
2. Step 2: Convert to fraction form
   1,540,678/3,435,407 = 3,435,407/x
3. Step 3: Cross multiply
   1,540,678x = 3,435,407 × 3,435,407
4. Step 4: Simplify right side
   1,540,678x = 11,802,021,255,649
5. Step 5: Solve for x
   x = 11,802,021,255,649/1,540,678
6. Step 6: Final answer
   x = 7,660,277.65