Finding the Third Proportional to 8,121.94 and 12,300.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,121.94 : 12,300.19 = 12,300.19 : x
2. Step 2: Convert to fraction form
   8,121.94/12,300.19 = 12,300.19/x
3. Step 3: Cross multiply
   8,121.94x = 12,300.19 × 12,300.19
4. Step 4: Simplify right side
   8,121.94x = 151,294,612.54
5. Step 5: Solve for x
   x = 151,294,612.54/8,121.94
6. Step 6: Final answer
   x = 18,627.90