Finding the Third Proportional to 128,693.25 and 196,866

Step by Step Solution

1. Step 1: Write the proportion equation
   128,693.25 : 196,866 = 196,866 : x
2. Step 2: Convert to fraction form
   128,693.25/196,866 = 196,866/x
3. Step 3: Cross multiply
   128,693.25x = 196,866 × 196,866
4. Step 4: Simplify right side
   128,693.25x = 38,756,221,956
5. Step 5: Solve for x
   x = 38,756,221,956/128,693.25
6. Step 6: Final answer
   x = 301,151.94