Finding the Third Proportional to 2,578,192 and 5,529,440

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,192 : 5,529,440 = 5,529,440 : x
2. Step 2: Convert to fraction form
   2,578,192/5,529,440 = 5,529,440/x
3. Step 3: Cross multiply
   2,578,192x = 5,529,440 × 5,529,440
4. Step 4: Simplify right side
   2,578,192x = 30,574,706,713,600
5. Step 5: Solve for x
   x = 30,574,706,713,600/2,578,192
6. Step 6: Final answer
   x = 11,858,971.99