Finding the Third Proportional to 20,623.50 and 31,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,623.50 : 31,513.50 = 31,513.50 : x
2. Step 2: Convert to fraction form
   20,623.50/31,513.50 = 31,513.50/x
3. Step 3: Cross multiply
   20,623.50x = 31,513.50 × 31,513.50
4. Step 4: Simplify right side
   20,623.50x = 993,100,682.25
5. Step 5: Solve for x
   x = 993,100,682.25/20,623.50
6. Step 6: Final answer
   x = 48,153.84