Finding the Third Proportional to 109,976.50 and 221,658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,976.50 : 221,658.50 = 221,658.50 : x
2. Step 2: Convert to fraction form
   109,976.50/221,658.50 = 221,658.50/x
3. Step 3: Cross multiply
   109,976.50x = 221,658.50 × 221,658.50
4. Step 4: Simplify right side
   109,976.50x = 49,132,490,622.25
5. Step 5: Solve for x
   x = 49,132,490,622.25/109,976.50
6. Step 6: Final answer
   x = 446,754.45