Finding the Third Proportional to 181,699.50 and 398,019

Step by Step Solution

1. Step 1: Write the proportion equation
   181,699.50 : 398,019 = 398,019 : x
2. Step 2: Convert to fraction form
   181,699.50/398,019 = 398,019/x
3. Step 3: Cross multiply
   181,699.50x = 398,019 × 398,019
4. Step 4: Simplify right side
   181,699.50x = 158,419,124,361
5. Step 5: Solve for x
   x = 158,419,124,361/181,699.50
6. Step 6: Final answer
   x = 871,874.30