Finding the Third Proportional to 79,719.75 and 174,989.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,719.75 : 174,989.50 = 174,989.50 : x
2. Step 2: Convert to fraction form
   79,719.75/174,989.50 = 174,989.50/x
3. Step 3: Cross multiply
   79,719.75x = 174,989.50 × 174,989.50
4. Step 4: Simplify right side
   79,719.75x = 30,621,325,110.25
5. Step 5: Solve for x
   x = 30,621,325,110.25/79,719.75
6. Step 6: Final answer
   x = 384,112.16