Finding the Third Proportional to 12,111.75 and 19,149.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.75 : 19,149.75 = 19,149.75 : x
2. Step 2: Convert to fraction form
   12,111.75/19,149.75 = 19,149.75/x
3. Step 3: Cross multiply
   12,111.75x = 19,149.75 × 19,149.75
4. Step 4: Simplify right side
   12,111.75x = 366,712,925.06
5. Step 5: Solve for x
   x = 366,712,925.06/12,111.75
6. Step 6: Final answer
   x = 30,277.45