Finding the Third Proportional to 111,542.25 and 243,393

Step by Step Solution

1. Step 1: Write the proportion equation
   111,542.25 : 243,393 = 243,393 : x
2. Step 2: Convert to fraction form
   111,542.25/243,393 = 243,393/x
3. Step 3: Cross multiply
   111,542.25x = 243,393 × 243,393
4. Step 4: Simplify right side
   111,542.25x = 59,240,152,449
5. Step 5: Solve for x
   x = 59,240,152,449/111,542.25
6. Step 6: Final answer
   x = 531,100.57