Finding the Third Proportional to 111,300 and 170,631

Step by Step Solution

1. Step 1: Write the proportion equation
   111,300 : 170,631 = 170,631 : x
2. Step 2: Convert to fraction form
   111,300/170,631 = 170,631/x
3. Step 3: Cross multiply
   111,300x = 170,631 × 170,631
4. Step 4: Simplify right side
   111,300x = 29,114,938,161
5. Step 5: Solve for x
   x = 29,114,938,161/111,300
6. Step 6: Final answer
   x = 261,589.74