Finding the Third Proportional to 2,135,178 and 4,664,340

Step by Step Solution

1. Step 1: Write the proportion equation
   2,135,178 : 4,664,340 = 4,664,340 : x
2. Step 2: Convert to fraction form
   2,135,178/4,664,340 = 4,664,340/x
3. Step 3: Cross multiply
   2,135,178x = 4,664,340 × 4,664,340
4. Step 4: Simplify right side
   2,135,178x = 21,756,067,635,600
5. Step 5: Solve for x
   x = 21,756,067,635,600/2,135,178
6. Step 6: Final answer
   x = 10,189,346.10