Finding the Third Proportional to 48,760 and 72,821

Step by Step Solution

1. Step 1: Write the proportion equation
   48,760 : 72,821 = 72,821 : x
2. Step 2: Convert to fraction form
   48,760/72,821 = 72,821/x
3. Step 3: Cross multiply
   48,760x = 72,821 × 72,821
4. Step 4: Simplify right side
   48,760x = 5,302,898,041
5. Step 5: Solve for x
   x = 5,302,898,041/48,760
6. Step 6: Final answer
   x = 108,755.09