Finding the Third Proportional to 79,860 and 173,886

Step by Step Solution

1. Step 1: Write the proportion equation
   79,860 : 173,886 = 173,886 : x
2. Step 2: Convert to fraction form
   79,860/173,886 = 173,886/x
3. Step 3: Cross multiply
   79,860x = 173,886 × 173,886
4. Step 4: Simplify right side
   79,860x = 30,236,340,996
5. Step 5: Solve for x
   x = 30,236,340,996/79,860
6. Step 6: Final answer
   x = 378,616.84