Finding the Third Proportional to 19,212.75 and 28,649.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,212.75 : 28,649.25 = 28,649.25 : x
2. Step 2: Convert to fraction form
   19,212.75/28,649.25 = 28,649.25/x
3. Step 3: Cross multiply
   19,212.75x = 28,649.25 × 28,649.25
4. Step 4: Simplify right side
   19,212.75x = 820,779,525.56
5. Step 5: Solve for x
   x = 820,779,525.56/19,212.75
6. Step 6: Final answer
   x = 42,720.56