Finding the Third Proportional to 173,270 and 259,199.75

Step by Step Solution

1. Step 1: Write the proportion equation
   173,270 : 259,199.75 = 259,199.75 : x
2. Step 2: Convert to fraction form
   173,270/259,199.75 = 259,199.75/x
3. Step 3: Cross multiply
   173,270x = 259,199.75 × 259,199.75
4. Step 4: Simplify right side
   173,270x = 67,184,510,400.06
5. Step 5: Solve for x
   x = 67,184,510,400.06/173,270
6. Step 6: Final answer
   x = 387,744.62