Finding the Third Proportional to 2,631,880 and 5,655,378

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,880 : 5,655,378 = 5,655,378 : x
2. Step 2: Convert to fraction form
   2,631,880/5,655,378 = 5,655,378/x
3. Step 3: Cross multiply
   2,631,880x = 5,655,378 × 5,655,378
4. Step 4: Simplify right side
   2,631,880x = 31,983,300,322,884
5. Step 5: Solve for x
   x = 31,983,300,322,884/2,631,880
6. Step 6: Final answer
   x = 12,152,263.90