Finding the Third Proportional to 864,680 and 1,231,753

Step by Step Solution

1. Step 1: Write the proportion equation
   864,680 : 1,231,753 = 1,231,753 : x
2. Step 2: Convert to fraction form
   864,680/1,231,753 = 1,231,753/x
3. Step 3: Cross multiply
   864,680x = 1,231,753 × 1,231,753
4. Step 4: Simplify right side
   864,680x = 1,517,215,453,009
5. Step 5: Solve for x
   x = 1,517,215,453,009/864,680
6. Step 6: Final answer
   x = 1,754,655.43