Finding the Third Proportional to 13,680.75 and 28,308.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,680.75 : 28,308.75 = 28,308.75 : x
2. Step 2: Convert to fraction form
   13,680.75/28,308.75 = 28,308.75/x
3. Step 3: Cross multiply
   13,680.75x = 28,308.75 × 28,308.75
4. Step 4: Simplify right side
   13,680.75x = 801,385,326.56
5. Step 5: Solve for x
   x = 801,385,326.56/13,680.75
6. Step 6: Final answer
   x = 58,577.59