Finding the Third Proportional to 857,057.25 and 1,828,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   857,057.25 : 1,828,021.50 = 1,828,021.50 : x
2. Step 2: Convert to fraction form
   857,057.25/1,828,021.50 = 1,828,021.50/x
3. Step 3: Cross multiply
   857,057.25x = 1,828,021.50 × 1,828,021.50
4. Step 4: Simplify right side
   857,057.25x = 3,341,662,604,462.25
5. Step 5: Solve for x
   x = 3,341,662,604,462.25/857,057.25
6. Step 6: Final answer
   x = 3,898,995.78