Finding the Third Proportional to 19,399.50 and 36,698.06

Step by Step Solution

1. Step 1: Write the proportion equation
   19,399.50 : 36,698.06 = 36,698.06 : x
2. Step 2: Convert to fraction form
   19,399.50/36,698.06 = 36,698.06/x
3. Step 3: Cross multiply
   19,399.50x = 36,698.06 × 36,698.06
4. Step 4: Simplify right side
   19,399.50x = 1,346,747,791.25
5. Step 5: Solve for x
   x = 1,346,747,791.25/19,399.50
6. Step 6: Final answer
   x = 69,421.78