Finding the Third Proportional to 11,969.10 and 19,121.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,969.10 : 19,121.37 = 19,121.37 : x
2. Step 2: Convert to fraction form
   11,969.10/19,121.37 = 19,121.37/x
3. Step 3: Cross multiply
   11,969.10x = 19,121.37 × 19,121.37
4. Step 4: Simplify right side
   11,969.10x = 365,626,658.61
5. Step 5: Solve for x
   x = 365,626,658.61/11,969.10
6. Step 6: Final answer
   x = 30,547.55