Finding the Third Proportional to 111,916.50 and 173,548.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,916.50 : 173,548.50 = 173,548.50 : x
2. Step 2: Convert to fraction form
   111,916.50/173,548.50 = 173,548.50/x
3. Step 3: Cross multiply
   111,916.50x = 173,548.50 × 173,548.50
4. Step 4: Simplify right side
   111,916.50x = 30,119,081,852.25
5. Step 5: Solve for x
   x = 30,119,081,852.25/111,916.50
6. Step 6: Final answer
   x = 269,121.01