Finding the Third Proportional to 12,660 and 29,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,660 : 29,308.50 = 29,308.50 : x
2. Step 2: Convert to fraction form
   12,660/29,308.50 = 29,308.50/x
3. Step 3: Cross multiply
   12,660x = 29,308.50 × 29,308.50
4. Step 4: Simplify right side
   12,660x = 858,988,172.25
5. Step 5: Solve for x
   x = 858,988,172.25/12,660
6. Step 6: Final answer
   x = 67,850.57