Finding the Third Proportional to 209,398.50 and 333,522

Step by Step Solution

1. Step 1: Write the proportion equation
   209,398.50 : 333,522 = 333,522 : x
2. Step 2: Convert to fraction form
   209,398.50/333,522 = 333,522/x
3. Step 3: Cross multiply
   209,398.50x = 333,522 × 333,522
4. Step 4: Simplify right side
   209,398.50x = 111,236,924,484
5. Step 5: Solve for x
   x = 111,236,924,484/209,398.50
6. Step 6: Final answer
   x = 531,221.21