Finding the Third Proportional to 77,919 and 111,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,919 : 111,040.50 = 111,040.50 : x
2. Step 2: Convert to fraction form
   77,919/111,040.50 = 111,040.50/x
3. Step 3: Cross multiply
   77,919x = 111,040.50 × 111,040.50
4. Step 4: Simplify right side
   77,919x = 12,329,992,640.25
5. Step 5: Solve for x
   x = 12,329,992,640.25/77,919
6. Step 6: Final answer
   x = 158,241.16