Finding the Third Proportional to 221,211 and 333,632.25

Step by Step Solution

1. Step 1: Write the proportion equation
   221,211 : 333,632.25 = 333,632.25 : x
2. Step 2: Convert to fraction form
   221,211/333,632.25 = 333,632.25/x
3. Step 3: Cross multiply
   221,211x = 333,632.25 × 333,632.25
4. Step 4: Simplify right side
   221,211x = 111,310,478,240.06
5. Step 5: Solve for x
   x = 111,310,478,240.06/221,211
6. Step 6: Final answer
   x = 503,186.90