Finding the Third Proportional to 403,408.50 and 869,058

Step by Step Solution

1. Step 1: Write the proportion equation
   403,408.50 : 869,058 = 869,058 : x
2. Step 2: Convert to fraction form
   403,408.50/869,058 = 869,058/x
3. Step 3: Cross multiply
   403,408.50x = 869,058 × 869,058
4. Step 4: Simplify right side
   403,408.50x = 755,261,807,364
5. Step 5: Solve for x
   x = 755,261,807,364/403,408.50
6. Step 6: Final answer
   x = 1,872,201.03