Finding the Third Proportional to 72,908 and 173,886

Step by Step Solution

1. Step 1: Write the proportion equation
   72,908 : 173,886 = 173,886 : x
2. Step 2: Convert to fraction form
   72,908/173,886 = 173,886/x
3. Step 3: Cross multiply
   72,908x = 173,886 × 173,886
4. Step 4: Simplify right side
   72,908x = 30,236,340,996
5. Step 5: Solve for x
   x = 30,236,340,996/72,908
6. Step 6: Final answer
   x = 414,719.11