Finding the Third Proportional to 12,261.75 and 19,429.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,261.75 : 19,429.13 = 19,429.13 : x
2. Step 2: Convert to fraction form
   12,261.75/19,429.13 = 19,429.13/x
3. Step 3: Cross multiply
   12,261.75x = 19,429.13 × 19,429.13
4. Step 4: Simplify right side
   12,261.75x = 377,490,898.27
5. Step 5: Solve for x
   x = 377,490,898.27/12,261.75
6. Step 6: Final answer
   x = 30,786.05