Finding the Third Proportional to 12,990.38 and 27,984.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,990.38 : 27,984.23 = 27,984.23 : x
2. Step 2: Convert to fraction form
   12,990.38/27,984.23 = 27,984.23/x
3. Step 3: Cross multiply
   12,990.38x = 27,984.23 × 27,984.23
4. Step 4: Simplify right side
   12,990.38x = 783,117,373.55
5. Step 5: Solve for x
   x = 783,117,373.55/12,990.38
6. Step 6: Final answer
   x = 60,284.43