Finding the Third Proportional to 77,918 and 111,039

Step by Step Solution

1. Step 1: Write the proportion equation
   77,918 : 111,039 = 111,039 : x
2. Step 2: Convert to fraction form
   77,918/111,039 = 111,039/x
3. Step 3: Cross multiply
   77,918x = 111,039 × 111,039
4. Step 4: Simplify right side
   77,918x = 12,329,659,521
5. Step 5: Solve for x
   x = 12,329,659,521/77,918
6. Step 6: Final answer
   x = 158,238.91