Finding the Third Proportional to 255,247 and 375,499

Step by Step Solution

1. Step 1: Write the proportion equation
   255,247 : 375,499 = 375,499 : x
2. Step 2: Convert to fraction form
   255,247/375,499 = 375,499/x
3. Step 3: Cross multiply
   255,247x = 375,499 × 375,499
4. Step 4: Simplify right side
   255,247x = 140,999,499,001
5. Step 5: Solve for x
   x = 140,999,499,001/255,247
6. Step 6: Final answer
   x = 552,404.14