Finding the Third Proportional to 221,158.50 and 333,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,158.50 : 333,570.50 = 333,570.50 : x
2. Step 2: Convert to fraction form
   221,158.50/333,570.50 = 333,570.50/x
3. Step 3: Cross multiply
   221,158.50x = 333,570.50 × 333,570.50
4. Step 4: Simplify right side
   221,158.50x = 111,269,278,470.25
5. Step 5: Solve for x
   x = 111,269,278,470.25/221,158.50
6. Step 6: Final answer
   x = 503,120.06