Finding the Third Proportional to 3,686,991 and 7,520,367

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,991 : 7,520,367 = 7,520,367 : x
2. Step 2: Convert to fraction form
   3,686,991/7,520,367 = 7,520,367/x
3. Step 3: Cross multiply
   3,686,991x = 7,520,367 × 7,520,367
4. Step 4: Simplify right side
   3,686,991x = 56,555,919,814,689
5. Step 5: Solve for x
   x = 56,555,919,814,689/3,686,991
6. Step 6: Final answer
   x = 15,339,315.94