Finding the Third Proportional to 12,868 and 30,970

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868 : 30,970 = 30,970 : x
2. Step 2: Convert to fraction form
   12,868/30,970 = 30,970/x
3. Step 3: Cross multiply
   12,868x = 30,970 × 30,970
4. Step 4: Simplify right side
   12,868x = 959,140,900
5. Step 5: Solve for x
   x = 959,140,900/12,868
6. Step 6: Final answer
   x = 74,536.91