Finding the Third Proportional to 13,780.13 and 20,568.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,780.13 : 20,568.94 = 20,568.94 : x
2. Step 2: Convert to fraction form
   13,780.13/20,568.94 = 20,568.94/x
3. Step 3: Cross multiply
   13,780.13x = 20,568.94 × 20,568.94
4. Step 4: Simplify right side
   13,780.13x = 423,081,189.88
5. Step 5: Solve for x
   x = 423,081,189.88/13,780.13
6. Step 6: Final answer
   x = 30,702.28