Finding the Third Proportional to 79,920 and 133,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,920 : 133,180.50 = 133,180.50 : x
2. Step 2: Convert to fraction form
   79,920/133,180.50 = 133,180.50/x
3. Step 3: Cross multiply
   79,920x = 133,180.50 × 133,180.50
4. Step 4: Simplify right side
   79,920x = 17,737,045,580.25
5. Step 5: Solve for x
   x = 17,737,045,580.25/79,920
6. Step 6: Final answer
   x = 221,935.00