Finding the Third Proportional to 13,871.81 and 21,153.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,871.81 : 21,153.94 = 21,153.94 : x
2. Step 2: Convert to fraction form
   13,871.81/21,153.94 = 21,153.94/x
3. Step 3: Cross multiply
   13,871.81x = 21,153.94 × 21,153.94
4. Step 4: Simplify right side
   13,871.81x = 447,489,071.75
5. Step 5: Solve for x
   x = 447,489,071.75/13,871.81
6. Step 6: Final answer
   x = 32,258.88