Finding the Third Proportional to 77,920 and 111,042

Step by Step Solution

1. Step 1: Write the proportion equation
   77,920 : 111,042 = 111,042 : x
2. Step 2: Convert to fraction form
   77,920/111,042 = 111,042/x
3. Step 3: Cross multiply
   77,920x = 111,042 × 111,042
4. Step 4: Simplify right side
   77,920x = 12,330,325,764
5. Step 5: Solve for x
   x = 12,330,325,764/77,920
6. Step 6: Final answer
   x = 158,243.40