Finding the Third Proportional to 776,540 and 1,218,386

Step by Step Solution

1. Step 1: Write the proportion equation
   776,540 : 1,218,386 = 1,218,386 : x
2. Step 2: Convert to fraction form
   776,540/1,218,386 = 1,218,386/x
3. Step 3: Cross multiply
   776,540x = 1,218,386 × 1,218,386
4. Step 4: Simplify right side
   776,540x = 1,484,464,444,996
5. Step 5: Solve for x
   x = 1,484,464,444,996/776,540
6. Step 6: Final answer
   x = 1,911,639.38