Finding the Third Proportional to 111,462.75 and 242,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,462.75 : 242,608.50 = 242,608.50 : x
2. Step 2: Convert to fraction form
   111,462.75/242,608.50 = 242,608.50/x
3. Step 3: Cross multiply
   111,462.75x = 242,608.50 × 242,608.50
4. Step 4: Simplify right side
   111,462.75x = 58,858,884,272.25
5. Step 5: Solve for x
   x = 58,858,884,272.25/111,462.75
6. Step 6: Final answer
   x = 528,058.78