Finding the Third Proportional to 72,571.78 and 109,951.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,571.78 : 109,951.17 = 109,951.17 : x
2. Step 2: Convert to fraction form
   72,571.78/109,951.17 = 109,951.17/x
3. Step 3: Cross multiply
   72,571.78x = 109,951.17 × 109,951.17
4. Step 4: Simplify right side
   72,571.78x = 12,089,260,196.69
5. Step 5: Solve for x
   x = 12,089,260,196.69/72,571.78
6. Step 6: Final answer
   x = 166,583.48