Finding the Third Proportional to 13,813 and 21,607

Step by Step Solution

1. Step 1: Write the proportion equation
   13,813 : 21,607 = 21,607 : x
2. Step 2: Convert to fraction form
   13,813/21,607 = 21,607/x
3. Step 3: Cross multiply
   13,813x = 21,607 × 21,607
4. Step 4: Simplify right side
   13,813x = 466,862,449
5. Step 5: Solve for x
   x = 466,862,449/13,813
6. Step 6: Final answer
   x = 33,798.77