Finding the Third Proportional to 876,856 and 1,315,406

Step by Step Solution

1. Step 1: Write the proportion equation
   876,856 : 1,315,406 = 1,315,406 : x
2. Step 2: Convert to fraction form
   876,856/1,315,406 = 1,315,406/x
3. Step 3: Cross multiply
   876,856x = 1,315,406 × 1,315,406
4. Step 4: Simplify right side
   876,856x = 1,730,292,944,836
5. Step 5: Solve for x
   x = 1,730,292,944,836/876,856
6. Step 6: Final answer
   x = 1,973,292.02