Finding the Third Proportional to 128,784.50 and 197,005

Step by Step Solution

1. Step 1: Write the proportion equation
   128,784.50 : 197,005 = 197,005 : x
2. Step 2: Convert to fraction form
   128,784.50/197,005 = 197,005/x
3. Step 3: Cross multiply
   128,784.50x = 197,005 × 197,005
4. Step 4: Simplify right side
   128,784.50x = 38,810,970,025
5. Step 5: Solve for x
   x = 38,810,970,025/128,784.50
6. Step 6: Final answer
   x = 301,363.67