Finding the Third Proportional to 79,600 and 123,180

Step by Step Solution

1. Step 1: Write the proportion equation
   79,600 : 123,180 = 123,180 : x
2. Step 2: Convert to fraction form
   79,600/123,180 = 123,180/x
3. Step 3: Cross multiply
   79,600x = 123,180 × 123,180
4. Step 4: Simplify right side
   79,600x = 15,173,312,400
5. Step 5: Solve for x
   x = 15,173,312,400/79,600
6. Step 6: Final answer
   x = 190,619.50