Finding the Third Proportional to 3,408.75 and 7,819.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408.75 : 7,819.88 = 7,819.88 : x
2. Step 2: Convert to fraction form
   3,408.75/7,819.88 = 7,819.88/x
3. Step 3: Cross multiply
   3,408.75x = 7,819.88 × 7,819.88
4. Step 4: Simplify right side
   3,408.75x = 61,150,445.02
5. Step 5: Solve for x
   x = 61,150,445.02/3,408.75
6. Step 6: Final answer
   x = 17,939.26