Finding the Third Proportional to 10,507 and 21,539

Step by Step Solution

1. Step 1: Write the proportion equation
   10,507 : 21,539 = 21,539 : x
2. Step 2: Convert to fraction form
   10,507/21,539 = 21,539/x
3. Step 3: Cross multiply
   10,507x = 21,539 × 21,539
4. Step 4: Simplify right side
   10,507x = 463,928,521
5. Step 5: Solve for x
   x = 463,928,521/10,507
6. Step 6: Final answer
   x = 44,154.23