Finding the Third Proportional to 111,503 and 240,502

Step by Step Solution

1. Step 1: Write the proportion equation
   111,503 : 240,502 = 240,502 : x
2. Step 2: Convert to fraction form
   111,503/240,502 = 240,502/x
3. Step 3: Cross multiply
   111,503x = 240,502 × 240,502
4. Step 4: Simplify right side
   111,503x = 57,841,212,004
5. Step 5: Solve for x
   x = 57,841,212,004/111,503
6. Step 6: Final answer
   x = 518,741.31