Finding the Third Proportional to 208,272 and 311,512.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,272 : 311,512.50 = 311,512.50 : x
2. Step 2: Convert to fraction form
   208,272/311,512.50 = 311,512.50/x
3. Step 3: Cross multiply
   208,272x = 311,512.50 × 311,512.50
4. Step 4: Simplify right side
   208,272x = 97,040,037,656.25
5. Step 5: Solve for x
   x = 97,040,037,656.25/208,272
6. Step 6: Final answer
   x = 465,929.35