Finding the Third Proportional to 12,009,810 and 18,589,168

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009,810 : 18,589,168 = 18,589,168 : x
2. Step 2: Convert to fraction form
   12,009,810/18,589,168 = 18,589,168/x
3. Step 3: Cross multiply
   12,009,810x = 18,589,168 × 18,589,168
4. Step 4: Simplify right side
   12,009,810x = 345,557,166,932,224
5. Step 5: Solve for x
   x = 345,557,166,932,224/12,009,810
6. Step 6: Final answer
   x = 28,772,908.72