Finding the Third Proportional to 116,388 and 248,040

Step by Step Solution

1. Step 1: Write the proportion equation
   116,388 : 248,040 = 248,040 : x
2. Step 2: Convert to fraction form
   116,388/248,040 = 248,040/x
3. Step 3: Cross multiply
   116,388x = 248,040 × 248,040
4. Step 4: Simplify right side
   116,388x = 61,523,841,600
5. Step 5: Solve for x
   x = 61,523,841,600/116,388
6. Step 6: Final answer
   x = 528,609.84