Finding the Third Proportional to 72,211 and 173,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,211 : 173,951.50 = 173,951.50 : x
2. Step 2: Convert to fraction form
   72,211/173,951.50 = 173,951.50/x
3. Step 3: Cross multiply
   72,211x = 173,951.50 × 173,951.50
4. Step 4: Simplify right side
   72,211x = 30,259,124,352.25
5. Step 5: Solve for x
   x = 30,259,124,352.25/72,211
6. Step 6: Final answer
   x = 419,037.60