Finding the Third Proportional to 2,155,366 and 3,138,279

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,366 : 3,138,279 = 3,138,279 : x
2. Step 2: Convert to fraction form
   2,155,366/3,138,279 = 3,138,279/x
3. Step 3: Cross multiply
   2,155,366x = 3,138,279 × 3,138,279
4. Step 4: Simplify right side
   2,155,366x = 9,848,795,081,841
5. Step 5: Solve for x
   x = 9,848,795,081,841/2,155,366
6. Step 6: Final answer
   x = 4,569,430.47