Finding the Third Proportional to 3,958,812 and 8,674,245

Step by Step Solution

1. Step 1: Write the proportion equation
   3,958,812 : 8,674,245 = 8,674,245 : x
2. Step 2: Convert to fraction form
   3,958,812/8,674,245 = 8,674,245/x
3. Step 3: Cross multiply
   3,958,812x = 8,674,245 × 8,674,245
4. Step 4: Simplify right side
   3,958,812x = 75,242,526,320,025
5. Step 5: Solve for x
   x = 75,242,526,320,025/3,958,812
6. Step 6: Final answer
   x = 19,006,339.86