Finding the Third Proportional to 656,142 and 1,409,970

Step by Step Solution

1. Step 1: Write the proportion equation
   656,142 : 1,409,970 = 1,409,970 : x
2. Step 2: Convert to fraction form
   656,142/1,409,970 = 1,409,970/x
3. Step 3: Cross multiply
   656,142x = 1,409,970 × 1,409,970
4. Step 4: Simplify right side
   656,142x = 1,988,015,400,900
5. Step 5: Solve for x
   x = 1,988,015,400,900/656,142
6. Step 6: Final answer
   x = 3,029,855.43