Finding the Third Proportional to 208,839 and 336,262.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,839 : 336,262.50 = 336,262.50 : x
2. Step 2: Convert to fraction form
   208,839/336,262.50 = 336,262.50/x
3. Step 3: Cross multiply
   208,839x = 336,262.50 × 336,262.50
4. Step 4: Simplify right side
   208,839x = 113,072,468,906.25
5. Step 5: Solve for x
   x = 113,072,468,906.25/208,839
6. Step 6: Final answer
   x = 541,433.68