Finding the Third Proportional to 189,308 and 404,883

Step by Step Solution

1. Step 1: Write the proportion equation
   189,308 : 404,883 = 404,883 : x
2. Step 2: Convert to fraction form
   189,308/404,883 = 404,883/x
3. Step 3: Cross multiply
   189,308x = 404,883 × 404,883
4. Step 4: Simplify right side
   189,308x = 163,930,243,689
5. Step 5: Solve for x
   x = 163,930,243,689/189,308
6. Step 6: Final answer
   x = 865,944.62