Finding the Third Proportional to 19,320.47 and 40,716.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,320.47 : 40,716.28 = 40,716.28 : x
2. Step 2: Convert to fraction form
   19,320.47/40,716.28 = 40,716.28/x
3. Step 3: Cross multiply
   19,320.47x = 40,716.28 × 40,716.28
4. Step 4: Simplify right side
   19,320.47x = 1,657,815,558.83
5. Step 5: Solve for x
   x = 1,657,815,558.83/19,320.47
6. Step 6: Final answer
   x = 85,806.18