Finding the Third Proportional to 861,700 and 1,315,878

Step by Step Solution

1. Step 1: Write the proportion equation
   861,700 : 1,315,878 = 1,315,878 : x
2. Step 2: Convert to fraction form
   861,700/1,315,878 = 1,315,878/x
3. Step 3: Cross multiply
   861,700x = 1,315,878 × 1,315,878
4. Step 4: Simplify right side
   861,700x = 1,731,534,910,884
5. Step 5: Solve for x
   x = 1,731,534,910,884/861,700
6. Step 6: Final answer
   x = 2,009,440.54