Finding the Third Proportional to 171,108 and 257,188.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,108 : 257,188.50 = 257,188.50 : x
2. Step 2: Convert to fraction form
   171,108/257,188.50 = 257,188.50/x
3. Step 3: Cross multiply
   171,108x = 257,188.50 × 257,188.50
4. Step 4: Simplify right side
   171,108x = 66,145,924,532.25
5. Step 5: Solve for x
   x = 66,145,924,532.25/171,108
6. Step 6: Final answer
   x = 386,574.12