Finding the Third Proportional to 129,879 and 195,199.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,879 : 195,199.50 = 195,199.50 : x
2. Step 2: Convert to fraction form
   129,879/195,199.50 = 195,199.50/x
3. Step 3: Cross multiply
   129,879x = 195,199.50 × 195,199.50
4. Step 4: Simplify right side
   129,879x = 38,102,844,800.25
5. Step 5: Solve for x
   x = 38,102,844,800.25/129,879
6. Step 6: Final answer
   x = 293,371.87