Finding the Third Proportional to 111,623.50 and 170,056

Step by Step Solution

1. Step 1: Write the proportion equation
   111,623.50 : 170,056 = 170,056 : x
2. Step 2: Convert to fraction form
   111,623.50/170,056 = 170,056/x
3. Step 3: Cross multiply
   111,623.50x = 170,056 × 170,056
4. Step 4: Simplify right side
   111,623.50x = 28,919,043,136
5. Step 5: Solve for x
   x = 28,919,043,136/111,623.50
6. Step 6: Final answer
   x = 259,076.66