Finding the Third Proportional to 12,018 and 27,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018 : 27,820.50 = 27,820.50 : x
2. Step 2: Convert to fraction form
   12,018/27,820.50 = 27,820.50/x
3. Step 3: Cross multiply
   12,018x = 27,820.50 × 27,820.50
4. Step 4: Simplify right side
   12,018x = 773,980,220.25
5. Step 5: Solve for x
   x = 773,980,220.25/12,018
6. Step 6: Final answer
   x = 64,401.75