Finding the Third Proportional to 111,574 and 169,987

Step by Step Solution

1. Step 1: Write the proportion equation
   111,574 : 169,987 = 169,987 : x
2. Step 2: Convert to fraction form
   111,574/169,987 = 169,987/x
3. Step 3: Cross multiply
   111,574x = 169,987 × 169,987
4. Step 4: Simplify right side
   111,574x = 28,895,580,169
5. Step 5: Solve for x
   x = 28,895,580,169/111,574
6. Step 6: Final answer
   x = 258,981.31