Finding the Third Proportional to 13,626.98 and 19,991.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,626.98 : 19,991.81 = 19,991.81 : x
2. Step 2: Convert to fraction form
   13,626.98/19,991.81 = 19,991.81/x
3. Step 3: Cross multiply
   13,626.98x = 19,991.81 × 19,991.81
4. Step 4: Simplify right side
   13,626.98x = 399,672,567.04
5. Step 5: Solve for x
   x = 399,672,567.04/13,626.98
6. Step 6: Final answer
   x = 29,329.49