Finding the Third Proportional to 140,548 and 308,744

Step by Step Solution

1. Step 1: Write the proportion equation
   140,548 : 308,744 = 308,744 : x
2. Step 2: Convert to fraction form
   140,548/308,744 = 308,744/x
3. Step 3: Cross multiply
   140,548x = 308,744 × 308,744
4. Step 4: Simplify right side
   140,548x = 95,322,857,536
5. Step 5: Solve for x
   x = 95,322,857,536/140,548
6. Step 6: Final answer
   x = 678,222.80