Finding the Third Proportional to 1,238,355 and 2,529,189

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,355 : 2,529,189 = 2,529,189 : x
2. Step 2: Convert to fraction form
   1,238,355/2,529,189 = 2,529,189/x
3. Step 3: Cross multiply
   1,238,355x = 2,529,189 × 2,529,189
4. Step 4: Simplify right side
   1,238,355x = 6,396,796,997,721
5. Step 5: Solve for x
   x = 6,396,796,997,721/1,238,355
6. Step 6: Final answer
   x = 5,165,559.95