Finding the Third Proportional to 128,131.50 and 195,357

Step by Step Solution

1. Step 1: Write the proportion equation
   128,131.50 : 195,357 = 195,357 : x
2. Step 2: Convert to fraction form
   128,131.50/195,357 = 195,357/x
3. Step 3: Cross multiply
   128,131.50x = 195,357 × 195,357
4. Step 4: Simplify right side
   128,131.50x = 38,164,357,449
5. Step 5: Solve for x
   x = 38,164,357,449/128,131.50
6. Step 6: Final answer
   x = 297,853.05