Finding the Third Proportional to 20,848 and 42,545

Step by Step Solution

1. Step 1: Write the proportion equation
   20,848 : 42,545 = 42,545 : x
2. Step 2: Convert to fraction form
   20,848/42,545 = 42,545/x
3. Step 3: Cross multiply
   20,848x = 42,545 × 42,545
4. Step 4: Simplify right side
   20,848x = 1,810,077,025
5. Step 5: Solve for x
   x = 1,810,077,025/20,848
6. Step 6: Final answer
   x = 86,822.57