Finding the Third Proportional to 1,238,728 and 1,810,316

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,728 : 1,810,316 = 1,810,316 : x
2. Step 2: Convert to fraction form
   1,238,728/1,810,316 = 1,810,316/x
3. Step 3: Cross multiply
   1,238,728x = 1,810,316 × 1,810,316
4. Step 4: Simplify right side
   1,238,728x = 3,277,244,019,856
5. Step 5: Solve for x
   x = 3,277,244,019,856/1,238,728
6. Step 6: Final answer
   x = 2,645,652.65