Finding the Third Proportional to 13,298.34 and 20,590.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.34 : 20,590.03 = 20,590.03 : x
2. Step 2: Convert to fraction form
   13,298.34/20,590.03 = 20,590.03/x
3. Step 3: Cross multiply
   13,298.34x = 20,590.03 × 20,590.03
4. Step 4: Simplify right side
   13,298.34x = 423,949,386.88
5. Step 5: Solve for x
   x = 423,949,386.88/13,298.34
6. Step 6: Final answer
   x = 31,879.86