Finding the Third Proportional to 129,856.50 and 174,879

Step by Step Solution

1. Step 1: Write the proportion equation
   129,856.50 : 174,879 = 174,879 : x
2. Step 2: Convert to fraction form
   129,856.50/174,879 = 174,879/x
3. Step 3: Cross multiply
   129,856.50x = 174,879 × 174,879
4. Step 4: Simplify right side
   129,856.50x = 30,582,664,641
5. Step 5: Solve for x
   x = 30,582,664,641/129,856.50
6. Step 6: Final answer
   x = 235,511.23