Finding the Third Proportional to 19,990.55 and 28,567.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,990.55 : 28,567.69 = 28,567.69 : x
2. Step 2: Convert to fraction form
   19,990.55/28,567.69 = 28,567.69/x
3. Step 3: Cross multiply
   19,990.55x = 28,567.69 × 28,567.69
4. Step 4: Simplify right side
   19,990.55x = 816,112,769.10
5. Step 5: Solve for x
   x = 816,112,769.10/19,990.55
6. Step 6: Final answer
   x = 40,824.93