Finding the Third Proportional to 2,170,804 and 3,191,178

Step by Step Solution

1. Step 1: Write the proportion equation
   2,170,804 : 3,191,178 = 3,191,178 : x
2. Step 2: Convert to fraction form
   2,170,804/3,191,178 = 3,191,178/x
3. Step 3: Cross multiply
   2,170,804x = 3,191,178 × 3,191,178
4. Step 4: Simplify right side
   2,170,804x = 10,183,617,027,684
5. Step 5: Solve for x
   x = 10,183,617,027,684/2,170,804
6. Step 6: Final answer
   x = 4,691,172.96