Finding the Third Proportional to 300.09 and 693.98

Step by Step Solution

1. Step 1: Write the proportion equation
   300.09 : 693.98 = 693.98 : x
2. Step 2: Convert to fraction form
   300.09/693.98 = 693.98/x
3. Step 3: Cross multiply
   300.09x = 693.98 × 693.98
4. Step 4: Simplify right side
   300.09x = 481,614.31
5. Step 5: Solve for x
   x = 481,614.31/300.09
6. Step 6: Final answer
   x = 1,604.88