Finding the Third Proportional to 203,475 and 311,260.50

Step by Step Solution

1. Step 1: Write the proportion equation
   203,475 : 311,260.50 = 311,260.50 : x
2. Step 2: Convert to fraction form
   203,475/311,260.50 = 311,260.50/x
3. Step 3: Cross multiply
   203,475x = 311,260.50 × 311,260.50
4. Step 4: Simplify right side
   203,475x = 96,883,098,860.25
5. Step 5: Solve for x
   x = 96,883,098,860.25/203,475
6. Step 6: Final answer
   x = 476,142.52