Finding the Third Proportional to 171,685.50 and 262,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,685.50 : 262,630.50 = 262,630.50 : x
2. Step 2: Convert to fraction form
   171,685.50/262,630.50 = 262,630.50/x
3. Step 3: Cross multiply
   171,685.50x = 262,630.50 × 262,630.50
4. Step 4: Simplify right side
   171,685.50x = 68,974,779,530.25
5. Step 5: Solve for x
   x = 68,974,779,530.25/171,685.50
6. Step 6: Final answer
   x = 401,750.76