Finding the Third Proportional to 51,647.63 and 79,749.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51,647.63 : 79,749.56 = 79,749.56 : x
2. Step 2: Convert to fraction form
   51,647.63/79,749.56 = 79,749.56/x
3. Step 3: Cross multiply
   51,647.63x = 79,749.56 × 79,749.56
4. Step 4: Simplify right side
   51,647.63x = 6,359,992,718.94
5. Step 5: Solve for x
   x = 6,359,992,718.94/51,647.63
6. Step 6: Final answer
   x = 123,142.02