Finding the Third Proportional to 1,391,004 and 2,931,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,004 : 2,931,456 = 2,931,456 : x
2. Step 2: Convert to fraction form
   1,391,004/2,931,456 = 2,931,456/x
3. Step 3: Cross multiply
   1,391,004x = 2,931,456 × 2,931,456
4. Step 4: Simplify right side
   1,391,004x = 8,593,434,279,936
5. Step 5: Solve for x
   x = 8,593,434,279,936/1,391,004
6. Step 6: Final answer
   x = 6,177,864.54