Finding the Third Proportional to 251,186.50 and 351,350

Step by Step Solution

1. Step 1: Write the proportion equation
   251,186.50 : 351,350 = 351,350 : x
2. Step 2: Convert to fraction form
   251,186.50/351,350 = 351,350/x
3. Step 3: Cross multiply
   251,186.50x = 351,350 × 351,350
4. Step 4: Simplify right side
   251,186.50x = 123,446,822,500
5. Step 5: Solve for x
   x = 123,446,822,500/251,186.50
6. Step 6: Final answer
   x = 491,454.85