Finding the Third Proportional to 21,160 and 43,600

Step by Step Solution

1. Step 1: Write the proportion equation
   21,160 : 43,600 = 43,600 : x
2. Step 2: Convert to fraction form
   21,160/43,600 = 43,600/x
3. Step 3: Cross multiply
   21,160x = 43,600 × 43,600
4. Step 4: Simplify right side
   21,160x = 1,900,960,000
5. Step 5: Solve for x
   x = 1,900,960,000/21,160
6. Step 6: Final answer
   x = 89,837.43