Finding the Third Proportional to 111,288 and 235,818

Step by Step Solution

1. Step 1: Write the proportion equation
   111,288 : 235,818 = 235,818 : x
2. Step 2: Convert to fraction form
   111,288/235,818 = 235,818/x
3. Step 3: Cross multiply
   111,288x = 235,818 × 235,818
4. Step 4: Simplify right side
   111,288x = 55,610,129,124
5. Step 5: Solve for x
   x = 55,610,129,124/111,288
6. Step 6: Final answer
   x = 499,695.65