Finding the Third Proportional to 140,978 and 207,573

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978 : 207,573 = 207,573 : x
2. Step 2: Convert to fraction form
   140,978/207,573 = 207,573/x
3. Step 3: Cross multiply
   140,978x = 207,573 × 207,573
4. Step 4: Simplify right side
   140,978x = 43,086,550,329
5. Step 5: Solve for x
   x = 43,086,550,329/140,978
6. Step 6: Final answer
   x = 305,626.06