Finding the Third Proportional to 6,448.15 and 13,672.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,448.15 : 13,672.55 = 13,672.55 : x
2. Step 2: Convert to fraction form
   6,448.15/13,672.55 = 13,672.55/x
3. Step 3: Cross multiply
   6,448.15x = 13,672.55 × 13,672.55
4. Step 4: Simplify right side
   6,448.15x = 186,938,538.05
5. Step 5: Solve for x
   x = 186,938,538.05/6,448.15
6. Step 6: Final answer
   x = 28,991.04