Finding the Third Proportional to 13,809.75 and 21,602.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,809.75 : 21,602.81 = 21,602.81 : x
2. Step 2: Convert to fraction form
   13,809.75/21,602.81 = 21,602.81/x
3. Step 3: Cross multiply
   13,809.75x = 21,602.81 × 21,602.81
4. Step 4: Simplify right side
   13,809.75x = 466,681,507.91
5. Step 5: Solve for x
   x = 466,681,507.91/13,809.75
6. Step 6: Final answer
   x = 33,793.62