Finding the Third Proportional to 21,090 and 43,233

Step by Step Solution

1. Step 1: Write the proportion equation
   21,090 : 43,233 = 43,233 : x
2. Step 2: Convert to fraction form
   21,090/43,233 = 43,233/x
3. Step 3: Cross multiply
   21,090x = 43,233 × 43,233
4. Step 4: Simplify right side
   21,090x = 1,869,092,289
5. Step 5: Solve for x
   x = 1,869,092,289/21,090
6. Step 6: Final answer
   x = 88,624.58