Finding the Third Proportional to 5,128.31 and 10,593.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,128.31 : 10,593.28 = 10,593.28 : x
2. Step 2: Convert to fraction form
   5,128.31/10,593.28 = 10,593.28/x
3. Step 3: Cross multiply
   5,128.31x = 10,593.28 × 10,593.28
4. Step 4: Simplify right side
   5,128.31x = 112,217,607.64
5. Step 5: Solve for x
   x = 112,217,607.64/5,128.31
6. Step 6: Final answer
   x = 21,881.98