Finding the Third Proportional to 185,800.50 and 279,910.69

Step by Step Solution

1. Step 1: Write the proportion equation
   185,800.50 : 279,910.69 = 279,910.69 : x
2. Step 2: Convert to fraction form
   185,800.50/279,910.69 = 279,910.69/x
3. Step 3: Cross multiply
   185,800.50x = 279,910.69 × 279,910.69
4. Step 4: Simplify right side
   185,800.50x = 78,349,992,976.72
5. Step 5: Solve for x
   x = 78,349,992,976.72/185,800.50
6. Step 6: Final answer
   x = 421,688.82