Finding the Third Proportional to 12,918 and 28,012

Step by Step Solution

1. Step 1: Write the proportion equation
   12,918 : 28,012 = 28,012 : x
2. Step 2: Convert to fraction form
   12,918/28,012 = 28,012/x
3. Step 3: Cross multiply
   12,918x = 28,012 × 28,012
4. Step 4: Simplify right side
   12,918x = 784,672,144
5. Step 5: Solve for x
   x = 784,672,144/12,918
6. Step 6: Final answer
   x = 60,742.54