Finding the Third Proportional to 671,248 and 1,420,256

Step by Step Solution

1. Step 1: Write the proportion equation
   671,248 : 1,420,256 = 1,420,256 : x
2. Step 2: Convert to fraction form
   671,248/1,420,256 = 1,420,256/x
3. Step 3: Cross multiply
   671,248x = 1,420,256 × 1,420,256
4. Step 4: Simplify right side
   671,248x = 2,017,127,105,536
5. Step 5: Solve for x
   x = 2,017,127,105,536/671,248
6. Step 6: Final answer
   x = 3,005,040.02