Finding the Third Proportional to 403,072.50 and 879,828

Step by Step Solution

1. Step 1: Write the proportion equation
   403,072.50 : 879,828 = 879,828 : x
2. Step 2: Convert to fraction form
   403,072.50/879,828 = 879,828/x
3. Step 3: Cross multiply
   403,072.50x = 879,828 × 879,828
4. Step 4: Simplify right side
   403,072.50x = 774,097,309,584
5. Step 5: Solve for x
   x = 774,097,309,584/403,072.50
6. Step 6: Final answer
   x = 1,920,491.50