Finding the Third Proportional to 13,621.50 and 26,871.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,621.50 : 26,871.75 = 26,871.75 : x
2. Step 2: Convert to fraction form
   13,621.50/26,871.75 = 26,871.75/x
3. Step 3: Cross multiply
   13,621.50x = 26,871.75 × 26,871.75
4. Step 4: Simplify right side
   13,621.50x = 722,090,948.06
5. Step 5: Solve for x
   x = 722,090,948.06/13,621.50
6. Step 6: Final answer
   x = 53,011.12