Finding the Third Proportional to 221,037 and 339,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,037 : 339,945.50 = 339,945.50 : x
2. Step 2: Convert to fraction form
   221,037/339,945.50 = 339,945.50/x
3. Step 3: Cross multiply
   221,037x = 339,945.50 × 339,945.50
4. Step 4: Simplify right side
   221,037x = 115,562,942,970.25
5. Step 5: Solve for x
   x = 115,562,942,970.25/221,037
6. Step 6: Final answer
   x = 522,821.71