Finding the Third Proportional to 2,158,458 and 3,118,356

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,458 : 3,118,356 = 3,118,356 : x
2. Step 2: Convert to fraction form
   2,158,458/3,118,356 = 3,118,356/x
3. Step 3: Cross multiply
   2,158,458x = 3,118,356 × 3,118,356
4. Step 4: Simplify right side
   2,158,458x = 9,724,144,142,736
5. Step 5: Solve for x
   x = 9,724,144,142,736/2,158,458
6. Step 6: Final answer
   x = 4,505,134.75