Finding the Third Proportional to 2,057.91 and 2,990.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.91 : 2,990.04 = 2,990.04 : x
2. Step 2: Convert to fraction form
   2,057.91/2,990.04 = 2,990.04/x
3. Step 3: Cross multiply
   2,057.91x = 2,990.04 × 2,990.04
4. Step 4: Simplify right side
   2,057.91x = 8,940,333.60
5. Step 5: Solve for x
   x = 8,940,333.60/2,057.91
6. Step 6: Final answer
   x = 4,344.38