Finding the Third Proportional to 1,017,216 and 1,379,928

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017,216 : 1,379,928 = 1,379,928 : x
2. Step 2: Convert to fraction form
   1,017,216/1,379,928 = 1,379,928/x
3. Step 3: Cross multiply
   1,017,216x = 1,379,928 × 1,379,928
4. Step 4: Simplify right side
   1,017,216x = 1,904,201,285,184
5. Step 5: Solve for x
   x = 1,904,201,285,184/1,017,216
6. Step 6: Final answer
   x = 1,871,973.39