Finding the Third Proportional to 111,604 and 248,040

Step by Step Solution

1. Step 1: Write the proportion equation
   111,604 : 248,040 = 248,040 : x
2. Step 2: Convert to fraction form
   111,604/248,040 = 248,040/x
3. Step 3: Cross multiply
   111,604x = 248,040 × 248,040
4. Step 4: Simplify right side
   111,604x = 61,523,841,600
5. Step 5: Solve for x
   x = 61,523,841,600/111,604
6. Step 6: Final answer
   x = 551,269.14