Finding the Third Proportional to 19,439.81 and 41,643.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,439.81 : 41,643.56 = 41,643.56 : x
2. Step 2: Convert to fraction form
   19,439.81/41,643.56 = 41,643.56/x
3. Step 3: Cross multiply
   19,439.81x = 41,643.56 × 41,643.56
4. Step 4: Simplify right side
   19,439.81x = 1,734,186,297.69
5. Step 5: Solve for x
   x = 1,734,186,297.69/19,439.81
6. Step 6: Final answer
   x = 89,207.97