Finding the Third Proportional to 1,479.94 and 2,128.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.94 : 2,128.22 = 2,128.22 : x
2. Step 2: Convert to fraction form
   1,479.94/2,128.22 = 2,128.22/x
3. Step 3: Cross multiply
   1,479.94x = 2,128.22 × 2,128.22
4. Step 4: Simplify right side
   1,479.94x = 4,529,315.05
5. Step 5: Solve for x
   x = 4,529,315.05/1,479.94
6. Step 6: Final answer
   x = 3,060.48