Finding the Third Proportional to 21,172.22 and 31,174.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,172.22 : 31,174.03 = 31,174.03 : x
2. Step 2: Convert to fraction form
   21,172.22/31,174.03 = 31,174.03/x
3. Step 3: Cross multiply
   21,172.22x = 31,174.03 × 31,174.03
4. Step 4: Simplify right side
   21,172.22x = 971,820,224.38
5. Step 5: Solve for x
   x = 971,820,224.38/21,172.22
6. Step 6: Final answer
   x = 45,900.73