Finding the Third Proportional to 10,242.88 and 21,685.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,242.88 : 21,685.75 = 21,685.75 : x
2. Step 2: Convert to fraction form
   10,242.88/21,685.75 = 21,685.75/x
3. Step 3: Cross multiply
   10,242.88x = 21,685.75 × 21,685.75
4. Step 4: Simplify right side
   10,242.88x = 470,271,753.06
5. Step 5: Solve for x
   x = 470,271,753.06/10,242.88
6. Step 6: Final answer
   x = 45,912.09