Finding the Third Proportional to 354,448.50 and 538,227

Step by Step Solution

1. Step 1: Write the proportion equation
   354,448.50 : 538,227 = 538,227 : x
2. Step 2: Convert to fraction form
   354,448.50/538,227 = 538,227/x
3. Step 3: Cross multiply
   354,448.50x = 538,227 × 538,227
4. Step 4: Simplify right side
   354,448.50x = 289,688,303,529
5. Step 5: Solve for x
   x = 289,688,303,529/354,448.50
6. Step 6: Final answer
   x = 817,293.07