Finding the Third Proportional to 620,272 and 1,315,824

Step by Step Solution

1. Step 1: Write the proportion equation
   620,272 : 1,315,824 = 1,315,824 : x
2. Step 2: Convert to fraction form
   620,272/1,315,824 = 1,315,824/x
3. Step 3: Cross multiply
   620,272x = 1,315,824 × 1,315,824
4. Step 4: Simplify right side
   620,272x = 1,731,392,798,976
5. Step 5: Solve for x
   x = 1,731,392,798,976/620,272
6. Step 6: Final answer
   x = 2,791,344.44