Finding the Third Proportional to 2,398,178 and 5,138,230

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398,178 : 5,138,230 = 5,138,230 : x
2. Step 2: Convert to fraction form
   2,398,178/5,138,230 = 5,138,230/x
3. Step 3: Cross multiply
   2,398,178x = 5,138,230 × 5,138,230
4. Step 4: Simplify right side
   2,398,178x = 26,401,407,532,900
5. Step 5: Solve for x
   x = 26,401,407,532,900/2,398,178
6. Step 6: Final answer
   x = 11,008,944.10