Finding the Third Proportional to 21,172.50 and 45,159.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,172.50 : 45,159.75 = 45,159.75 : x
2. Step 2: Convert to fraction form
   21,172.50/45,159.75 = 45,159.75/x
3. Step 3: Cross multiply
   21,172.50x = 45,159.75 × 45,159.75
4. Step 4: Simplify right side
   21,172.50x = 2,039,403,020.06
5. Step 5: Solve for x
   x = 2,039,403,020.06/21,172.50
6. Step 6: Final answer
   x = 96,323.20