Finding the Third Proportional to 12,979.13 and 17,042.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.13 : 17,042.63 = 17,042.63 : x
2. Step 2: Convert to fraction form
   12,979.13/17,042.63 = 17,042.63/x
3. Step 3: Cross multiply
   12,979.13x = 17,042.63 × 17,042.63
4. Step 4: Simplify right side
   12,979.13x = 290,451,066.89
5. Step 5: Solve for x
   x = 290,451,066.89/12,979.13
6. Step 6: Final answer
   x = 22,378.32