Finding the Third Proportional to 14,395.50 and 30,978

Step by Step Solution

1. Step 1: Write the proportion equation
   14,395.50 : 30,978 = 30,978 : x
2. Step 2: Convert to fraction form
   14,395.50/30,978 = 30,978/x
3. Step 3: Cross multiply
   14,395.50x = 30,978 × 30,978
4. Step 4: Simplify right side
   14,395.50x = 959,636,484
5. Step 5: Solve for x
   x = 959,636,484/14,395.50
6. Step 6: Final answer
   x = 66,662.25