Finding the Third Proportional to 865,885.50 and 1,857,865.50

Step by Step Solution

1. Step 1: Write the proportion equation
   865,885.50 : 1,857,865.50 = 1,857,865.50 : x
2. Step 2: Convert to fraction form
   865,885.50/1,857,865.50 = 1,857,865.50/x
3. Step 3: Cross multiply
   865,885.50x = 1,857,865.50 × 1,857,865.50
4. Step 4: Simplify right side
   865,885.50x = 3,451,664,216,090.25
5. Step 5: Solve for x
   x = 3,451,664,216,090.25/865,885.50
6. Step 6: Final answer
   x = 3,986,282.50