Finding the Third Proportional to 19,581.75 and 36,019.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,581.75 : 36,019.69 = 36,019.69 : x
2. Step 2: Convert to fraction form
   19,581.75/36,019.69 = 36,019.69/x
3. Step 3: Cross multiply
   19,581.75x = 36,019.69 × 36,019.69
4. Step 4: Simplify right side
   19,581.75x = 1,297,417,887.60
5. Step 5: Solve for x
   x = 1,297,417,887.60/19,581.75
6. Step 6: Final answer
   x = 66,256.48