Finding the Third Proportional to 2,170,800 and 3,191,172

Step by Step Solution

1. Step 1: Write the proportion equation
   2,170,800 : 3,191,172 = 3,191,172 : x
2. Step 2: Convert to fraction form
   2,170,800/3,191,172 = 3,191,172/x
3. Step 3: Cross multiply
   2,170,800x = 3,191,172 × 3,191,172
4. Step 4: Simplify right side
   2,170,800x = 10,183,578,733,584
5. Step 5: Solve for x
   x = 10,183,578,733,584/2,170,800
6. Step 6: Final answer
   x = 4,691,163.96