Finding the Third Proportional to 1,540,685 and 3,435,421

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540,685 : 3,435,421 = 3,435,421 : x
2. Step 2: Convert to fraction form
   1,540,685/3,435,421 = 3,435,421/x
3. Step 3: Cross multiply
   1,540,685x = 3,435,421 × 3,435,421
4. Step 4: Simplify right side
   1,540,685x = 11,802,117,447,241
5. Step 5: Solve for x
   x = 11,802,117,447,241/1,540,685
6. Step 6: Final answer
   x = 7,660,305.28