Finding the Third Proportional to 1,686,636 and 3,687,825

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,636 : 3,687,825 = 3,687,825 : x
2. Step 2: Convert to fraction form
   1,686,636/3,687,825 = 3,687,825/x
3. Step 3: Cross multiply
   1,686,636x = 3,687,825 × 3,687,825
4. Step 4: Simplify right side
   1,686,636x = 13,600,053,230,625
5. Step 5: Solve for x
   x = 13,600,053,230,625/1,686,636
6. Step 6: Final answer
   x = 8,063,419.27