Finding the Third Proportional to 6,936 and 12,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,936 : 12,331.50 = 12,331.50 : x
2. Step 2: Convert to fraction form
   6,936/12,331.50 = 12,331.50/x
3. Step 3: Cross multiply
   6,936x = 12,331.50 × 12,331.50
4. Step 4: Simplify right side
   6,936x = 152,065,892.25
5. Step 5: Solve for x
   x = 152,065,892.25/6,936
6. Step 6: Final answer
   x = 21,924.15