Finding the Third Proportional to 10,642 and 21,588

Step by Step Solution

1. Step 1: Write the proportion equation
   10,642 : 21,588 = 21,588 : x
2. Step 2: Convert to fraction form
   10,642/21,588 = 21,588/x
3. Step 3: Cross multiply
   10,642x = 21,588 × 21,588
4. Step 4: Simplify right side
   10,642x = 466,041,744
5. Step 5: Solve for x
   x = 466,041,744/10,642
6. Step 6: Final answer
   x = 43,792.68