Finding the Third Proportional to 21,078 and 31,756.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,078 : 31,756.13 = 31,756.13 : x
2. Step 2: Convert to fraction form
   21,078/31,756.13 = 31,756.13/x
3. Step 3: Cross multiply
   21,078x = 31,756.13 × 31,756.13
4. Step 4: Simplify right side
   21,078x = 1,008,451,475.02
5. Step 5: Solve for x
   x = 1,008,451,475.02/21,078
6. Step 6: Final answer
   x = 47,843.79