Finding the Third Proportional to 5,380,937 and 8,171,055

Step by Step Solution

1. Step 1: Write the proportion equation
   5,380,937 : 8,171,055 = 8,171,055 : x
2. Step 2: Convert to fraction form
   5,380,937/8,171,055 = 8,171,055/x
3. Step 3: Cross multiply
   5,380,937x = 8,171,055 × 8,171,055
4. Step 4: Simplify right side
   5,380,937x = 66,766,139,813,025
5. Step 5: Solve for x
   x = 66,766,139,813,025/5,380,937
6. Step 6: Final answer
   x = 12,407,902.16