Finding the Third Proportional to 128,134.50 and 195,360

Step by Step Solution

1. Step 1: Write the proportion equation
   128,134.50 : 195,360 = 195,360 : x
2. Step 2: Convert to fraction form
   128,134.50/195,360 = 195,360/x
3. Step 3: Cross multiply
   128,134.50x = 195,360 × 195,360
4. Step 4: Simplify right side
   128,134.50x = 38,165,529,600
5. Step 5: Solve for x
   x = 38,165,529,600/128,134.50
6. Step 6: Final answer
   x = 297,855.22