Finding the Third Proportional to 7,842.45 and 12,336.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,842.45 : 12,336.05 = 12,336.05 : x
2. Step 2: Convert to fraction form
   7,842.45/12,336.05 = 12,336.05/x
3. Step 3: Cross multiply
   7,842.45x = 12,336.05 × 12,336.05
4. Step 4: Simplify right side
   7,842.45x = 152,178,052.50
5. Step 5: Solve for x
   x = 152,178,052.50/7,842.45
6. Step 6: Final answer
   x = 19,404.41