Finding the Third Proportional to 111,256.25 and 172,164

Step by Step Solution

1. Step 1: Write the proportion equation
   111,256.25 : 172,164 = 172,164 : x
2. Step 2: Convert to fraction form
   111,256.25/172,164 = 172,164/x
3. Step 3: Cross multiply
   111,256.25x = 172,164 × 172,164
4. Step 4: Simplify right side
   111,256.25x = 29,640,442,896
5. Step 5: Solve for x
   x = 29,640,442,896/111,256.25
6. Step 6: Final answer
   x = 266,415.98