Finding the Third Proportional to 6,388,659 and 13,855,245

Step by Step Solution

1. Step 1: Write the proportion equation
   6,388,659 : 13,855,245 = 13,855,245 : x
2. Step 2: Convert to fraction form
   6,388,659/13,855,245 = 13,855,245/x
3. Step 3: Cross multiply
   6,388,659x = 13,855,245 × 13,855,245
4. Step 4: Simplify right side
   6,388,659x = 191,967,814,010,025
5. Step 5: Solve for x
   x = 191,967,814,010,025/6,388,659
6. Step 6: Final answer
   x = 30,048,217.32