Finding the Third Proportional to 864,985.50 and 1,857,834

Step by Step Solution

1. Step 1: Write the proportion equation
   864,985.50 : 1,857,834 = 1,857,834 : x
2. Step 2: Convert to fraction form
   864,985.50/1,857,834 = 1,857,834/x
3. Step 3: Cross multiply
   864,985.50x = 1,857,834 × 1,857,834
4. Step 4: Simplify right side
   864,985.50x = 3,451,547,171,556
5. Step 5: Solve for x
   x = 3,451,547,171,556/864,985.50
6. Step 6: Final answer
   x = 3,990,294.83