Finding the Third Proportional to 111,710.81 and 239,411.81

Step by Step Solution

1. Step 1: Write the proportion equation
   111,710.81 : 239,411.81 = 239,411.81 : x
2. Step 2: Convert to fraction form
   111,710.81/239,411.81 = 239,411.81/x
3. Step 3: Cross multiply
   111,710.81x = 239,411.81 × 239,411.81
4. Step 4: Simplify right side
   111,710.81x = 57,318,015,964.54
5. Step 5: Solve for x
   x = 57,318,015,964.54/111,710.81
6. Step 6: Final answer
   x = 513,092.82