Finding the Third Proportional to 111,425 and 172,607

Step by Step Solution

1. Step 1: Write the proportion equation
   111,425 : 172,607 = 172,607 : x
2. Step 2: Convert to fraction form
   111,425/172,607 = 172,607/x
3. Step 3: Cross multiply
   111,425x = 172,607 × 172,607
4. Step 4: Simplify right side
   111,425x = 29,793,176,449
5. Step 5: Solve for x
   x = 29,793,176,449/111,425
6. Step 6: Final answer
   x = 267,383.23