Finding the Third Proportional to 107,287.50 and 166,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107,287.50 : 166,216.50 = 166,216.50 : x
2. Step 2: Convert to fraction form
   107,287.50/166,216.50 = 166,216.50/x
3. Step 3: Cross multiply
   107,287.50x = 166,216.50 × 166,216.50
4. Step 4: Simplify right side
   107,287.50x = 27,627,924,872.25
5. Step 5: Solve for x
   x = 27,627,924,872.25/107,287.50
6. Step 6: Final answer
   x = 257,512.99