Finding the Third Proportional to 128,805 and 197,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,805 : 197,049.50 = 197,049.50 : x
2. Step 2: Convert to fraction form
   128,805/197,049.50 = 197,049.50/x
3. Step 3: Cross multiply
   128,805x = 197,049.50 × 197,049.50
4. Step 4: Simplify right side
   128,805x = 38,828,505,450.25
5. Step 5: Solve for x
   x = 38,828,505,450.25/128,805
6. Step 6: Final answer
   x = 301,451.85