Finding the Third Proportional to 590,256 and 1,291,320

Step by Step Solution

1. Step 1: Write the proportion equation
   590,256 : 1,291,320 = 1,291,320 : x
2. Step 2: Convert to fraction form
   590,256/1,291,320 = 1,291,320/x
3. Step 3: Cross multiply
   590,256x = 1,291,320 × 1,291,320
4. Step 4: Simplify right side
   590,256x = 1,667,507,342,400
5. Step 5: Solve for x
   x = 1,667,507,342,400/590,256
6. Step 6: Final answer
   x = 2,825,057.84