Finding the Third Proportional to 221,112 and 333,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,112 : 333,517.50 = 333,517.50 : x
2. Step 2: Convert to fraction form
   221,112/333,517.50 = 333,517.50/x
3. Step 3: Cross multiply
   221,112x = 333,517.50 × 333,517.50
4. Step 4: Simplify right side
   221,112x = 111,233,922,806.25
5. Step 5: Solve for x
   x = 111,233,922,806.25/221,112
6. Step 6: Final answer
   x = 503,065.97