Finding the Third Proportional to 2,615,308 and 5,643,471

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615,308 : 5,643,471 = 5,643,471 : x
2. Step 2: Convert to fraction form
   2,615,308/5,643,471 = 5,643,471/x
3. Step 3: Cross multiply
   2,615,308x = 5,643,471 × 5,643,471
4. Step 4: Simplify right side
   2,615,308x = 31,848,764,927,841
5. Step 5: Solve for x
   x = 31,848,764,927,841/2,615,308
6. Step 6: Final answer
   x = 12,177,825.68