Finding the Third Proportional to 21,170.25 and 45,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,170.25 : 45,715.50 = 45,715.50 : x
2. Step 2: Convert to fraction form
   21,170.25/45,715.50 = 45,715.50/x
3. Step 3: Cross multiply
   21,170.25x = 45,715.50 × 45,715.50
4. Step 4: Simplify right side
   21,170.25x = 2,089,906,940.25
5. Step 5: Solve for x
   x = 2,089,906,940.25/21,170.25
6. Step 6: Final answer
   x = 98,719.05