Finding the Third Proportional to 12,748.22 and 19,788.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.22 : 19,788.47 = 19,788.47 : x
2. Step 2: Convert to fraction form
   12,748.22/19,788.47 = 19,788.47/x
3. Step 3: Cross multiply
   12,748.22x = 19,788.47 × 19,788.47
4. Step 4: Simplify right side
   12,748.22x = 391,583,495.47
5. Step 5: Solve for x
   x = 391,583,495.47/12,748.22
6. Step 6: Final answer
   x = 30,716.72