Finding the Third Proportional to 3,858,134 and 5,642,340

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,134 : 5,642,340 = 5,642,340 : x
2. Step 2: Convert to fraction form
   3,858,134/5,642,340 = 5,642,340/x
3. Step 3: Cross multiply
   3,858,134x = 5,642,340 × 5,642,340
4. Step 4: Simplify right side
   3,858,134x = 31,836,000,675,600
5. Step 5: Solve for x
   x = 31,836,000,675,600/3,858,134
6. Step 6: Final answer
   x = 8,251,657.58