Finding the Third Proportional to 12,842 and 28,136

Step by Step Solution

1. Step 1: Write the proportion equation
   12,842 : 28,136 = 28,136 : x
2. Step 2: Convert to fraction form
   12,842/28,136 = 28,136/x
3. Step 3: Cross multiply
   12,842x = 28,136 × 28,136
4. Step 4: Simplify right side
   12,842x = 791,634,496
5. Step 5: Solve for x
   x = 791,634,496/12,842
6. Step 6: Final answer
   x = 61,644.18