Finding the Third Proportional to 13,213.13 and 19,717.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,213.13 : 19,717.17 = 19,717.17 : x
2. Step 2: Convert to fraction form
   13,213.13/19,717.17 = 19,717.17/x
3. Step 3: Cross multiply
   13,213.13x = 19,717.17 × 19,717.17
4. Step 4: Simplify right side
   13,213.13x = 388,766,866.75
5. Step 5: Solve for x
   x = 388,766,866.75/13,213.13
6. Step 6: Final answer
   x = 29,422.78