Finding the Third Proportional to 3,858,138 and 5,642,346

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,138 : 5,642,346 = 5,642,346 : x
2. Step 2: Convert to fraction form
   3,858,138/5,642,346 = 5,642,346/x
3. Step 3: Cross multiply
   3,858,138x = 5,642,346 × 5,642,346
4. Step 4: Simplify right side
   3,858,138x = 31,836,068,383,716
5. Step 5: Solve for x
   x = 31,836,068,383,716/3,858,138
6. Step 6: Final answer
   x = 8,251,666.58