Finding the Third Proportional to 111,298 and 170,628

Step by Step Solution

1. Step 1: Write the proportion equation
   111,298 : 170,628 = 170,628 : x
2. Step 2: Convert to fraction form
   111,298/170,628 = 170,628/x
3. Step 3: Cross multiply
   111,298x = 170,628 × 170,628
4. Step 4: Simplify right side
   111,298x = 29,113,914,384
5. Step 5: Solve for x
   x = 29,113,914,384/111,298
6. Step 6: Final answer
   x = 261,585.24