Finding the Third Proportional to 20,560.29 and 42,736.15

Step by Step Solution

1. Step 1: Write the proportion equation
   20,560.29 : 42,736.15 = 42,736.15 : x
2. Step 2: Convert to fraction form
   20,560.29/42,736.15 = 42,736.15/x
3. Step 3: Cross multiply
   20,560.29x = 42,736.15 × 42,736.15
4. Step 4: Simplify right side
   20,560.29x = 1,826,378,383.27
5. Step 5: Solve for x
   x = 1,826,378,383.27/20,560.29
6. Step 6: Final answer
   x = 88,830.38