Finding the Third Proportional to 72,210 and 173,949

Step by Step Solution

1. Step 1: Write the proportion equation
   72,210 : 173,949 = 173,949 : x
2. Step 2: Convert to fraction form
   72,210/173,949 = 173,949/x
3. Step 3: Cross multiply
   72,210x = 173,949 × 173,949
4. Step 4: Simplify right side
   72,210x = 30,258,254,601
5. Step 5: Solve for x
   x = 30,258,254,601/72,210
6. Step 6: Final answer
   x = 419,031.36