Finding the Third Proportional to 656,530 and 1,428,090

Step by Step Solution

1. Step 1: Write the proportion equation
   656,530 : 1,428,090 = 1,428,090 : x
2. Step 2: Convert to fraction form
   656,530/1,428,090 = 1,428,090/x
3. Step 3: Cross multiply
   656,530x = 1,428,090 × 1,428,090
4. Step 4: Simplify right side
   656,530x = 2,039,441,048,100
5. Step 5: Solve for x
   x = 2,039,441,048,100/656,530
6. Step 6: Final answer
   x = 3,106,394.30