Finding the Third Proportional to 120,568 and 270,788

Step by Step Solution

1. Step 1: Write the proportion equation
   120,568 : 270,788 = 270,788 : x
2. Step 2: Convert to fraction form
   120,568/270,788 = 270,788/x
3. Step 3: Cross multiply
   120,568x = 270,788 × 270,788
4. Step 4: Simplify right side
   120,568x = 73,326,140,944
5. Step 5: Solve for x
   x = 73,326,140,944/120,568
6. Step 6: Final answer
   x = 608,172.49