Finding the Third Proportional to 203,499 and 311,296.50

Step by Step Solution

1. Step 1: Write the proportion equation
   203,499 : 311,296.50 = 311,296.50 : x
2. Step 2: Convert to fraction form
   203,499/311,296.50 = 311,296.50/x
3. Step 3: Cross multiply
   203,499x = 311,296.50 × 311,296.50
4. Step 4: Simplify right side
   203,499x = 96,905,510,912.25
5. Step 5: Solve for x
   x = 96,905,510,912.25/203,499
6. Step 6: Final answer
   x = 476,196.50