Finding the Third Proportional to 638,538 and 1,363,826.25

Step by Step Solution

1. Step 1: Write the proportion equation
   638,538 : 1,363,826.25 = 1,363,826.25 : x
2. Step 2: Convert to fraction form
   638,538/1,363,826.25 = 1,363,826.25/x
3. Step 3: Cross multiply
   638,538x = 1,363,826.25 × 1,363,826.25
4. Step 4: Simplify right side
   638,538x = 1,860,022,040,189.06
5. Step 5: Solve for x
   x = 1,860,022,040,189.06/638,538
6. Step 6: Final answer
   x = 2,912,938.68