Finding the Third Proportional to 111,981 and 173,409

Step by Step Solution

1. Step 1: Write the proportion equation
   111,981 : 173,409 = 173,409 : x
2. Step 2: Convert to fraction form
   111,981/173,409 = 173,409/x
3. Step 3: Cross multiply
   111,981x = 173,409 × 173,409
4. Step 4: Simplify right side
   111,981x = 30,070,681,281
5. Step 5: Solve for x
   x = 30,070,681,281/111,981
6. Step 6: Final answer
   x = 268,533.78