Finding the Third Proportional to 21,181.50 and 31,124.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,181.50 : 31,124.25 = 31,124.25 : x
2. Step 2: Convert to fraction form
   21,181.50/31,124.25 = 31,124.25/x
3. Step 3: Cross multiply
   21,181.50x = 31,124.25 × 31,124.25
4. Step 4: Simplify right side
   21,181.50x = 968,718,938.06
5. Step 5: Solve for x
   x = 968,718,938.06/21,181.50
6. Step 6: Final answer
   x = 45,734.20