Finding the Third Proportional to 851,392 and 1,280,664

Step by Step Solution

1. Step 1: Write the proportion equation
   851,392 : 1,280,664 = 1,280,664 : x
2. Step 2: Convert to fraction form
   851,392/1,280,664 = 1,280,664/x
3. Step 3: Cross multiply
   851,392x = 1,280,664 × 1,280,664
4. Step 4: Simplify right side
   851,392x = 1,640,100,280,896
5. Step 5: Solve for x
   x = 1,640,100,280,896/851,392
6. Step 6: Final answer
   x = 1,926,375.02