Finding the Third Proportional to 79,416 and 123,480

Step by Step Solution

1. Step 1: Write the proportion equation
   79,416 : 123,480 = 123,480 : x
2. Step 2: Convert to fraction form
   79,416/123,480 = 123,480/x
3. Step 3: Cross multiply
   79,416x = 123,480 × 123,480
4. Step 4: Simplify right side
   79,416x = 15,247,310,400
5. Step 5: Solve for x
   x = 15,247,310,400/79,416
6. Step 6: Final answer
   x = 191,992.93