Finding the Third Proportional to 111,258 and 239,994

Step by Step Solution

1. Step 1: Write the proportion equation
   111,258 : 239,994 = 239,994 : x
2. Step 2: Convert to fraction form
   111,258/239,994 = 239,994/x
3. Step 3: Cross multiply
   111,258x = 239,994 × 239,994
4. Step 4: Simplify right side
   111,258x = 57,597,120,036
5. Step 5: Solve for x
   x = 57,597,120,036/111,258
6. Step 6: Final answer
   x = 517,689.69