Finding the Third Proportional to 12,243 and 19,457.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,243 : 19,457.25 = 19,457.25 : x
2. Step 2: Convert to fraction form
   12,243/19,457.25 = 19,457.25/x
3. Step 3: Cross multiply
   12,243x = 19,457.25 × 19,457.25
4. Step 4: Simplify right side
   12,243x = 378,584,577.56
5. Step 5: Solve for x
   x = 378,584,577.56/12,243
6. Step 6: Final answer
   x = 30,922.53