Finding the Third Proportional to 34,920 and 73,980

Step by Step Solution

1. Step 1: Write the proportion equation
   34,920 : 73,980 = 73,980 : x
2. Step 2: Convert to fraction form
   34,920/73,980 = 73,980/x
3. Step 3: Cross multiply
   34,920x = 73,980 × 73,980
4. Step 4: Simplify right side
   34,920x = 5,473,040,400
5. Step 5: Solve for x
   x = 5,473,040,400/34,920
6. Step 6: Final answer
   x = 156,730.82