Finding the Third Proportional to 12,154,665.94 and 18,540,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,154,665.94 : 18,540,616.50 = 18,540,616.50 : x
2. Step 2: Convert to fraction form
   12,154,665.94/18,540,616.50 = 18,540,616.50/x
3. Step 3: Cross multiply
   12,154,665.94x = 18,540,616.50 × 18,540,616.50
4. Step 4: Simplify right side
   12,154,665.94x = 343,754,460,200,072.25
5. Step 5: Solve for x
   x = 343,754,460,200,072.25/12,154,665.94
6. Step 6: Final answer
   x = 28,281,687.21