Finding the Third Proportional to 19,693.13 and 40,069.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,693.13 : 40,069.69 = 40,069.69 : x
2. Step 2: Convert to fraction form
   19,693.13/40,069.69 = 40,069.69/x
3. Step 3: Cross multiply
   19,693.13x = 40,069.69 × 40,069.69
4. Step 4: Simplify right side
   19,693.13x = 1,605,579,856.35
5. Step 5: Solve for x
   x = 1,605,579,856.35/19,693.13
6. Step 6: Final answer
   x = 81,529.97