Finding the Third Proportional to 590,272 and 1,290,648

Step by Step Solution

1. Step 1: Write the proportion equation
   590,272 : 1,290,648 = 1,290,648 : x
2. Step 2: Convert to fraction form
   590,272/1,290,648 = 1,290,648/x
3. Step 3: Cross multiply
   590,272x = 1,290,648 × 1,290,648
4. Step 4: Simplify right side
   590,272x = 1,665,772,259,904
5. Step 5: Solve for x
   x = 1,665,772,259,904/590,272
6. Step 6: Final answer
   x = 2,822,041.80