Finding the Third Proportional to 171,940 and 262,998

Step by Step Solution

1. Step 1: Write the proportion equation
   171,940 : 262,998 = 262,998 : x
2. Step 2: Convert to fraction form
   171,940/262,998 = 262,998/x
3. Step 3: Cross multiply
   171,940x = 262,998 × 262,998
4. Step 4: Simplify right side
   171,940x = 69,167,948,004
5. Step 5: Solve for x
   x = 69,167,948,004/171,940
6. Step 6: Final answer
   x = 402,279.56