Finding the Third Proportional to 876,393 and 1,386,540

Step by Step Solution

1. Step 1: Write the proportion equation
   876,393 : 1,386,540 = 1,386,540 : x
2. Step 2: Convert to fraction form
   876,393/1,386,540 = 1,386,540/x
3. Step 3: Cross multiply
   876,393x = 1,386,540 × 1,386,540
4. Step 4: Simplify right side
   876,393x = 1,922,493,171,600
5. Step 5: Solve for x
   x = 1,922,493,171,600/876,393
6. Step 6: Final answer
   x = 2,193,642.77