Finding the Third Proportional to 861,186 and 1,853,988

Step by Step Solution

1. Step 1: Write the proportion equation
   861,186 : 1,853,988 = 1,853,988 : x
2. Step 2: Convert to fraction form
   861,186/1,853,988 = 1,853,988/x
3. Step 3: Cross multiply
   861,186x = 1,853,988 × 1,853,988
4. Step 4: Simplify right side
   861,186x = 3,437,271,504,144
5. Step 5: Solve for x
   x = 3,437,271,504,144/861,186
6. Step 6: Final answer
   x = 3,991,323.02