Finding the Third Proportional to 403,643.25 and 849,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,643.25 : 849,109.50 = 849,109.50 : x
2. Step 2: Convert to fraction form
   403,643.25/849,109.50 = 849,109.50/x
3. Step 3: Cross multiply
   403,643.25x = 849,109.50 × 849,109.50
4. Step 4: Simplify right side
   403,643.25x = 720,986,942,990.25
5. Step 5: Solve for x
   x = 720,986,942,990.25/403,643.25
6. Step 6: Final answer
   x = 1,786,198.44