Finding the Third Proportional to 7,819.88 and 12,114.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,819.88 : 12,114.56 = 12,114.56 : x
2. Step 2: Convert to fraction form
   7,819.88/12,114.56 = 12,114.56/x
3. Step 3: Cross multiply
   7,819.88x = 12,114.56 × 12,114.56
4. Step 4: Simplify right side
   7,819.88x = 146,762,624.57
5. Step 5: Solve for x
   x = 146,762,624.57/7,819.88
6. Step 6: Final answer
   x = 18,767.90