Finding the Third Proportional to 1,264,256 and 1,920,960

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264,256 : 1,920,960 = 1,920,960 : x
2. Step 2: Convert to fraction form
   1,264,256/1,920,960 = 1,920,960/x
3. Step 3: Cross multiply
   1,264,256x = 1,920,960 × 1,920,960
4. Step 4: Simplify right side
   1,264,256x = 3,690,087,321,600
5. Step 5: Solve for x
   x = 3,690,087,321,600/1,264,256
6. Step 6: Final answer
   x = 2,918,781.74