Finding the Third Proportional to 1,238,378 and 2,529,238

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,378 : 2,529,238 = 2,529,238 : x
2. Step 2: Convert to fraction form
   1,238,378/2,529,238 = 2,529,238/x
3. Step 3: Cross multiply
   1,238,378x = 2,529,238 × 2,529,238
4. Step 4: Simplify right side
   1,238,378x = 6,397,044,860,644
5. Step 5: Solve for x
   x = 6,397,044,860,644/1,238,378
6. Step 6: Final answer
   x = 5,165,664.17