Finding the Third Proportional to 178,119 and 268,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   178,119 : 268,879.50 = 268,879.50 : x
2. Step 2: Convert to fraction form
   178,119/268,879.50 = 268,879.50/x
3. Step 3: Cross multiply
   178,119x = 268,879.50 × 268,879.50
4. Step 4: Simplify right side
   178,119x = 72,296,185,520.25
5. Step 5: Solve for x
   x = 72,296,185,520.25/178,119
6. Step 6: Final answer
   x = 405,886.99