Finding the Third Proportional to 171,591.75 and 260,885.25

Step by Step Solution

1. Step 1: Write the proportion equation
   171,591.75 : 260,885.25 = 260,885.25 : x
2. Step 2: Convert to fraction form
   171,591.75/260,885.25 = 260,885.25/x
3. Step 3: Cross multiply
   171,591.75x = 260,885.25 × 260,885.25
4. Step 4: Simplify right side
   171,591.75x = 68,061,113,667.56
5. Step 5: Solve for x
   x = 68,061,113,667.56/171,591.75
6. Step 6: Final answer
   x = 396,645.61