Finding the Third Proportional to 9,499.78 and 12,339.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.78 : 12,339.84 = 12,339.84 : x
2. Step 2: Convert to fraction form
   9,499.78/12,339.84 = 12,339.84/x
3. Step 3: Cross multiply
   9,499.78x = 12,339.84 × 12,339.84
4. Step 4: Simplify right side
   9,499.78x = 152,271,743.77
5. Step 5: Solve for x
   x = 152,271,743.77/9,499.78
6. Step 6: Final answer
   x = 16,028.97