Finding the Third Proportional to 861,696 and 1,315,872

Step by Step Solution

1. Step 1: Write the proportion equation
   861,696 : 1,315,872 = 1,315,872 : x
2. Step 2: Convert to fraction form
   861,696/1,315,872 = 1,315,872/x
3. Step 3: Cross multiply
   861,696x = 1,315,872 × 1,315,872
4. Step 4: Simplify right side
   861,696x = 1,731,519,120,384
5. Step 5: Solve for x
   x = 1,731,519,120,384/861,696
6. Step 6: Final answer
   x = 2,009,431.54