Finding the Third Proportional to 2,615,300 and 5,643,456

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615,300 : 5,643,456 = 5,643,456 : x
2. Step 2: Convert to fraction form
   2,615,300/5,643,456 = 5,643,456/x
3. Step 3: Cross multiply
   2,615,300x = 5,643,456 × 5,643,456
4. Step 4: Simplify right side
   2,615,300x = 31,848,595,623,936
5. Step 5: Solve for x
   x = 31,848,595,623,936/2,615,300
6. Step 6: Final answer
   x = 12,177,798.20