Finding the Third Proportional to 4,320.56 and 9,322.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,320.56 : 9,322.88 = 9,322.88 : x
2. Step 2: Convert to fraction form
   4,320.56/9,322.88 = 9,322.88/x
3. Step 3: Cross multiply
   4,320.56x = 9,322.88 × 9,322.88
4. Step 4: Simplify right side
   4,320.56x = 86,915,998.27
5. Step 5: Solve for x
   x = 86,915,998.27/4,320.56
6. Step 6: Final answer
   x = 20,116.82