Finding the Third Proportional to 12,009,814 and 18,589,174

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009,814 : 18,589,174 = 18,589,174 : x
2. Step 2: Convert to fraction form
   12,009,814/18,589,174 = 18,589,174/x
3. Step 3: Cross multiply
   12,009,814x = 18,589,174 × 18,589,174
4. Step 4: Simplify right side
   12,009,814x = 345,557,390,002,276
5. Step 5: Solve for x
   x = 345,557,390,002,276/12,009,814
6. Step 6: Final answer
   x = 28,772,917.72