Finding the Third Proportional to 21,270 and 45,790

Step by Step Solution

1. Step 1: Write the proportion equation
   21,270 : 45,790 = 45,790 : x
2. Step 2: Convert to fraction form
   21,270/45,790 = 45,790/x
3. Step 3: Cross multiply
   21,270x = 45,790 × 45,790
4. Step 4: Simplify right side
   21,270x = 2,096,724,100
5. Step 5: Solve for x
   x = 2,096,724,100/21,270
6. Step 6: Final answer
   x = 98,576.59