Finding the Third Proportional to 79,308 and 122,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,308 : 122,728.50 = 122,728.50 : x
2. Step 2: Convert to fraction form
   79,308/122,728.50 = 122,728.50/x
3. Step 3: Cross multiply
   79,308x = 122,728.50 × 122,728.50
4. Step 4: Simplify right side
   79,308x = 15,062,284,712.25
5. Step 5: Solve for x
   x = 15,062,284,712.25/79,308
6. Step 6: Final answer
   x = 189,921.38