Finding the Third Proportional to 20,783.25 and 42,791.63

Step by Step Solution

1. Step 1: Write the proportion equation
   20,783.25 : 42,791.63 = 42,791.63 : x
2. Step 2: Convert to fraction form
   20,783.25/42,791.63 = 42,791.63/x
3. Step 3: Cross multiply
   20,783.25x = 42,791.63 × 42,791.63
4. Step 4: Simplify right side
   20,783.25x = 1,831,123,170.14
5. Step 5: Solve for x
   x = 1,831,123,170.14/20,783.25
6. Step 6: Final answer
   x = 88,105.72