Finding the Third Proportional to 12,287.50 and 19,221

Step by Step Solution

1. Step 1: Write the proportion equation
   12,287.50 : 19,221 = 19,221 : x
2. Step 2: Convert to fraction form
   12,287.50/19,221 = 19,221/x
3. Step 3: Cross multiply
   12,287.50x = 19,221 × 19,221
4. Step 4: Simplify right side
   12,287.50x = 369,446,841
5. Step 5: Solve for x
   x = 369,446,841/12,287.50
6. Step 6: Final answer
   x = 30,066.88