Finding the Third Proportional to 5,355 and 10,602

Step by Step Solution

1. Step 1: Write the proportion equation
   5,355 : 10,602 = 10,602 : x
2. Step 2: Convert to fraction form
   5,355/10,602 = 10,602/x
3. Step 3: Cross multiply
   5,355x = 10,602 × 10,602
4. Step 4: Simplify right side
   5,355x = 112,402,404
5. Step 5: Solve for x
   x = 112,402,404/5,355
6. Step 6: Final answer
   x = 20,990.18