Finding the Third Proportional to 111,915.50 and 173,546.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,915.50 : 173,546.63 = 173,546.63 : x
2. Step 2: Convert to fraction form
   111,915.50/173,546.63 = 173,546.63/x
3. Step 3: Cross multiply
   111,915.50x = 173,546.63 × 173,546.63
4. Step 4: Simplify right side
   111,915.50x = 30,118,431,048.89
5. Step 5: Solve for x
   x = 30,118,431,048.89/111,915.50
6. Step 6: Final answer
   x = 269,117.60