Finding the Third Proportional to 128,797.50 and 197,019

Step by Step Solution

1. Step 1: Write the proportion equation
   128,797.50 : 197,019 = 197,019 : x
2. Step 2: Convert to fraction form
   128,797.50/197,019 = 197,019/x
3. Step 3: Cross multiply
   128,797.50x = 197,019 × 197,019
4. Step 4: Simplify right side
   128,797.50x = 38,816,486,361
5. Step 5: Solve for x
   x = 38,816,486,361/128,797.50
6. Step 6: Final answer
   x = 301,376.09