Finding the Third Proportional to 20,025.84 and 42,640.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,025.84 : 42,640.31 = 42,640.31 : x
2. Step 2: Convert to fraction form
   20,025.84/42,640.31 = 42,640.31/x
3. Step 3: Cross multiply
   20,025.84x = 42,640.31 × 42,640.31
4. Step 4: Simplify right side
   20,025.84x = 1,818,196,250.10
5. Step 5: Solve for x
   x = 1,818,196,250.10/20,025.84
6. Step 6: Final answer
   x = 90,792.49