Finding the Third Proportional to 590,270 and 1,290,644

Step by Step Solution

1. Step 1: Write the proportion equation
   590,270 : 1,290,644 = 1,290,644 : x
2. Step 2: Convert to fraction form
   590,270/1,290,644 = 1,290,644/x
3. Step 3: Cross multiply
   590,270x = 1,290,644 × 1,290,644
4. Step 4: Simplify right side
   590,270x = 1,665,761,934,736
5. Step 5: Solve for x
   x = 1,665,761,934,736/590,270
6. Step 6: Final answer
   x = 2,822,033.87