Finding the Third Proportional to 166,672.50 and 254,109

Step by Step Solution

1. Step 1: Write the proportion equation
   166,672.50 : 254,109 = 254,109 : x
2. Step 2: Convert to fraction form
   166,672.50/254,109 = 254,109/x
3. Step 3: Cross multiply
   166,672.50x = 254,109 × 254,109
4. Step 4: Simplify right side
   166,672.50x = 64,571,383,881
5. Step 5: Solve for x
   x = 64,571,383,881/166,672.50
6. Step 6: Final answer
   x = 387,414.74