Finding the Third Proportional to 8,300.63 and 12,513.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.63 : 12,513.38 = 12,513.38 : x
2. Step 2: Convert to fraction form
   8,300.63/12,513.38 = 12,513.38/x
3. Step 3: Cross multiply
   8,300.63x = 12,513.38 × 12,513.38
4. Step 4: Simplify right side
   8,300.63x = 156,584,553.89
5. Step 5: Solve for x
   x = 156,584,553.89/8,300.63
6. Step 6: Final answer
   x = 18,864.19