Finding the Third Proportional to 111,681.50 and 240,859

Step by Step Solution

1. Step 1: Write the proportion equation
   111,681.50 : 240,859 = 240,859 : x
2. Step 2: Convert to fraction form
   111,681.50/240,859 = 240,859/x
3. Step 3: Cross multiply
   111,681.50x = 240,859 × 240,859
4. Step 4: Simplify right side
   111,681.50x = 58,013,057,881
5. Step 5: Solve for x
   x = 58,013,057,881/111,681.50
6. Step 6: Final answer
   x = 519,450.92