Finding the Third Proportional to 111,242 and 169,617

Step by Step Solution

1. Step 1: Write the proportion equation
   111,242 : 169,617 = 169,617 : x
2. Step 2: Convert to fraction form
   111,242/169,617 = 169,617/x
3. Step 3: Cross multiply
   111,242x = 169,617 × 169,617
4. Step 4: Simplify right side
   111,242x = 28,769,926,689
5. Step 5: Solve for x
   x = 28,769,926,689/111,242
6. Step 6: Final answer
   x = 258,624.68