Finding the Third Proportional to 21,171.50 and 45,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,171.50 : 45,717.50 = 45,717.50 : x
2. Step 2: Convert to fraction form
   21,171.50/45,717.50 = 45,717.50/x
3. Step 3: Cross multiply
   21,171.50x = 45,717.50 × 45,717.50
4. Step 4: Simplify right side
   21,171.50x = 2,090,089,806.25
5. Step 5: Solve for x
   x = 2,090,089,806.25/21,171.50
6. Step 6: Final answer
   x = 98,721.86