Finding the Third Proportional to 79,474.50 and 111,399.75

Step by Step Solution

1. Step 1: Write the proportion equation
   79,474.50 : 111,399.75 = 111,399.75 : x
2. Step 2: Convert to fraction form
   79,474.50/111,399.75 = 111,399.75/x
3. Step 3: Cross multiply
   79,474.50x = 111,399.75 × 111,399.75
4. Step 4: Simplify right side
   79,474.50x = 12,409,904,300.06
5. Step 5: Solve for x
   x = 12,409,904,300.06/79,474.50
6. Step 6: Final answer
   x = 156,149.51