Finding the Third Proportional to 109,172 and 166,672

Step by Step Solution

1. Step 1: Write the proportion equation
   109,172 : 166,672 = 166,672 : x
2. Step 2: Convert to fraction form
   109,172/166,672 = 166,672/x
3. Step 3: Cross multiply
   109,172x = 166,672 × 166,672
4. Step 4: Simplify right side
   109,172x = 27,779,555,584
5. Step 5: Solve for x
   x = 27,779,555,584/109,172
6. Step 6: Final answer
   x = 254,456.78