Finding the Third Proportional to 20,136 and 42,704

Step by Step Solution

1. Step 1: Write the proportion equation
   20,136 : 42,704 = 42,704 : x
2. Step 2: Convert to fraction form
   20,136/42,704 = 42,704/x
3. Step 3: Cross multiply
   20,136x = 42,704 × 42,704
4. Step 4: Simplify right side
   20,136x = 1,823,631,616
5. Step 5: Solve for x
   x = 1,823,631,616/20,136
6. Step 6: Final answer
   x = 90,565.73