Finding the Third Proportional to 79,821 and 123,603.75

Step by Step Solution

1. Step 1: Write the proportion equation
   79,821 : 123,603.75 = 123,603.75 : x
2. Step 2: Convert to fraction form
   79,821/123,603.75 = 123,603.75/x
3. Step 3: Cross multiply
   79,821x = 123,603.75 × 123,603.75
4. Step 4: Simplify right side
   79,821x = 15,277,887,014.06
5. Step 5: Solve for x
   x = 15,277,887,014.06/79,821
6. Step 6: Final answer
   x = 191,401.85