Finding the Third Proportional to 12,122.81 and 18,814.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,122.81 : 18,814.69 = 18,814.69 : x
2. Step 2: Convert to fraction form
   12,122.81/18,814.69 = 18,814.69/x
3. Step 3: Cross multiply
   12,122.81x = 18,814.69 × 18,814.69
4. Step 4: Simplify right side
   12,122.81x = 353,992,465.72
5. Step 5: Solve for x
   x = 353,992,465.72/12,122.81
6. Step 6: Final answer
   x = 29,200.52