Finding the Third Proportional to 861,700 and 1,840,684

Step by Step Solution

1. Step 1: Write the proportion equation
   861,700 : 1,840,684 = 1,840,684 : x
2. Step 2: Convert to fraction form
   861,700/1,840,684 = 1,840,684/x
3. Step 3: Cross multiply
   861,700x = 1,840,684 × 1,840,684
4. Step 4: Simplify right side
   861,700x = 3,388,117,587,856
5. Step 5: Solve for x
   x = 3,388,117,587,856/861,700
6. Step 6: Final answer
   x = 3,931,899.25