Finding the Third Proportional to 173,340 and 259,290

Step by Step Solution

1. Step 1: Write the proportion equation
   173,340 : 259,290 = 259,290 : x
2. Step 2: Convert to fraction form
   173,340/259,290 = 259,290/x
3. Step 3: Cross multiply
   173,340x = 259,290 × 259,290
4. Step 4: Simplify right side
   173,340x = 67,231,304,100
5. Step 5: Solve for x
   x = 67,231,304,100/173,340
6. Step 6: Final answer
   x = 387,857.99