Finding the Third Proportional to 128,723 and 196,914

Step by Step Solution

1. Step 1: Write the proportion equation
   128,723 : 196,914 = 196,914 : x
2. Step 2: Convert to fraction form
   128,723/196,914 = 196,914/x
3. Step 3: Cross multiply
   128,723x = 196,914 × 196,914
4. Step 4: Simplify right side
   128,723x = 38,775,123,396
5. Step 5: Solve for x
   x = 38,775,123,396/128,723
6. Step 6: Final answer
   x = 301,229.18