Finding the Third Proportional to 2,989.13 and 5,979.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.13 : 5,979.38 = 5,979.38 : x
2. Step 2: Convert to fraction form
   2,989.13/5,979.38 = 5,979.38/x
3. Step 3: Cross multiply
   2,989.13x = 5,979.38 × 5,979.38
4. Step 4: Simplify right side
   2,989.13x = 35,752,925.39
5. Step 5: Solve for x
   x = 35,752,925.39/2,989.13
6. Step 6: Final answer
   x = 11,961.00