Finding the Third Proportional to 111,973.50 and 173,369.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,973.50 : 173,369.25 = 173,369.25 : x
2. Step 2: Convert to fraction form
   111,973.50/173,369.25 = 173,369.25/x
3. Step 3: Cross multiply
   111,973.50x = 173,369.25 × 173,369.25
4. Step 4: Simplify right side
   111,973.50x = 30,056,896,845.56
5. Step 5: Solve for x
   x = 30,056,896,845.56/111,973.50
6. Step 6: Final answer
   x = 268,428.66