Finding the Third Proportional to 251,401.50 and 351,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   251,401.50 : 351,661.50 = 351,661.50 : x
2. Step 2: Convert to fraction form
   251,401.50/351,661.50 = 351,661.50/x
3. Step 3: Cross multiply
   251,401.50x = 351,661.50 × 351,661.50
4. Step 4: Simplify right side
   251,401.50x = 123,665,810,582.25
5. Step 5: Solve for x
   x = 123,665,810,582.25/251,401.50
6. Step 6: Final answer
   x = 491,905.62