Finding the Third Proportional to 383,940 and 571,910

Step by Step Solution

1. Step 1: Write the proportion equation
   383,940 : 571,910 = 571,910 : x
2. Step 2: Convert to fraction form
   383,940/571,910 = 571,910/x
3. Step 3: Cross multiply
   383,940x = 571,910 × 571,910
4. Step 4: Simplify right side
   383,940x = 327,081,048,100
5. Step 5: Solve for x
   x = 327,081,048,100/383,940
6. Step 6: Final answer
   x = 851,906.67