Finding the Third Proportional to 2,578,312 and 5,368,344

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,312 : 5,368,344 = 5,368,344 : x
2. Step 2: Convert to fraction form
   2,578,312/5,368,344 = 5,368,344/x
3. Step 3: Cross multiply
   2,578,312x = 5,368,344 × 5,368,344
4. Step 4: Simplify right side
   2,578,312x = 28,819,117,302,336
5. Step 5: Solve for x
   x = 28,819,117,302,336/2,578,312
6. Step 6: Final answer
   x = 11,177,513.54