Finding the Third Proportional to 646,144 and 1,324,528

Step by Step Solution

1. Step 1: Write the proportion equation
   646,144 : 1,324,528 = 1,324,528 : x
2. Step 2: Convert to fraction form
   646,144/1,324,528 = 1,324,528/x
3. Step 3: Cross multiply
   646,144x = 1,324,528 × 1,324,528
4. Step 4: Simplify right side
   646,144x = 1,754,374,422,784
5. Step 5: Solve for x
   x = 1,754,374,422,784/646,144
6. Step 6: Final answer
   x = 2,715,144.65