Finding the Third Proportional to 403,040.25 and 879,763.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,040.25 : 879,763.50 = 879,763.50 : x
2. Step 2: Convert to fraction form
   403,040.25/879,763.50 = 879,763.50/x
3. Step 3: Cross multiply
   403,040.25x = 879,763.50 × 879,763.50
4. Step 4: Simplify right side
   403,040.25x = 773,983,815,932.25
5. Step 5: Solve for x
   x = 773,983,815,932.25/403,040.25
6. Step 6: Final answer
   x = 1,920,363.58