Finding the Third Proportional to 79,886 and 173,865

Step by Step Solution

1. Step 1: Write the proportion equation
   79,886 : 173,865 = 173,865 : x
2. Step 2: Convert to fraction form
   79,886/173,865 = 173,865/x
3. Step 3: Cross multiply
   79,886x = 173,865 × 173,865
4. Step 4: Simplify right side
   79,886x = 30,229,038,225
5. Step 5: Solve for x
   x = 30,229,038,225/79,886
6. Step 6: Final answer
   x = 378,402.20