Finding the Third Proportional to 6,292.69 and 12,990.38

Step by Step Solution

1. Step 1: Write the proportion equation
   6,292.69 : 12,990.38 = 12,990.38 : x
2. Step 2: Convert to fraction form
   6,292.69/12,990.38 = 12,990.38/x
3. Step 3: Cross multiply
   6,292.69x = 12,990.38 × 12,990.38
4. Step 4: Simplify right side
   6,292.69x = 168,749,842.64
5. Step 5: Solve for x
   x = 168,749,842.64/6,292.69
6. Step 6: Final answer
   x = 26,816.82