Finding the Third Proportional to 111,915 and 173,292

Step by Step Solution

1. Step 1: Write the proportion equation
   111,915 : 173,292 = 173,292 : x
2. Step 2: Convert to fraction form
   111,915/173,292 = 173,292/x
3. Step 3: Cross multiply
   111,915x = 173,292 × 173,292
4. Step 4: Simplify right side
   111,915x = 30,030,117,264
5. Step 5: Solve for x
   x = 30,030,117,264/111,915
6. Step 6: Final answer
   x = 268,329.69