Finding the Third Proportional to 20,570 and 30,807

Step by Step Solution

1. Step 1: Write the proportion equation
   20,570 : 30,807 = 30,807 : x
2. Step 2: Convert to fraction form
   20,570/30,807 = 30,807/x
3. Step 3: Cross multiply
   20,570x = 30,807 × 30,807
4. Step 4: Simplify right side
   20,570x = 949,071,249
5. Step 5: Solve for x
   x = 949,071,249/20,570
6. Step 6: Final answer
   x = 46,138.61