Finding the Third Proportional to 13,810.50 and 21,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,810.50 : 21,811.50 = 21,811.50 : x
2. Step 2: Convert to fraction form
   13,810.50/21,811.50 = 21,811.50/x
3. Step 3: Cross multiply
   13,810.50x = 21,811.50 × 21,811.50
4. Step 4: Simplify right side
   13,810.50x = 475,741,532.25
5. Step 5: Solve for x
   x = 475,741,532.25/13,810.50
6. Step 6: Final answer
   x = 34,447.81