Finding the Third Proportional to 2,578,310 and 5,368,340

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,310 : 5,368,340 = 5,368,340 : x
2. Step 2: Convert to fraction form
   2,578,310/5,368,340 = 5,368,340/x
3. Step 3: Cross multiply
   2,578,310x = 5,368,340 × 5,368,340
4. Step 4: Simplify right side
   2,578,310x = 28,819,074,355,600
5. Step 5: Solve for x
   x = 28,819,074,355,600/2,578,310
6. Step 6: Final answer
   x = 11,177,505.56