Finding the Third Proportional to 12,979.50 and 30,396.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.50 : 30,396.75 = 30,396.75 : x
2. Step 2: Convert to fraction form
   12,979.50/30,396.75 = 30,396.75/x
3. Step 3: Cross multiply
   12,979.50x = 30,396.75 × 30,396.75
4. Step 4: Simplify right side
   12,979.50x = 923,962,410.56
5. Step 5: Solve for x
   x = 923,962,410.56/12,979.50
6. Step 6: Final answer
   x = 71,186.29