Finding the Third Proportional to 5,146.75 and 10,475.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,146.75 : 10,475.25 = 10,475.25 : x
2. Step 2: Convert to fraction form
   5,146.75/10,475.25 = 10,475.25/x
3. Step 3: Cross multiply
   5,146.75x = 10,475.25 × 10,475.25
4. Step 4: Simplify right side
   5,146.75x = 109,730,862.56
5. Step 5: Solve for x
   x = 109,730,862.56/5,146.75
6. Step 6: Final answer
   x = 21,320.42