Finding the Third Proportional to 978,402 and 1,998,276

Step by Step Solution

1. Step 1: Write the proportion equation
   978,402 : 1,998,276 = 1,998,276 : x
2. Step 2: Convert to fraction form
   978,402/1,998,276 = 1,998,276/x
3. Step 3: Cross multiply
   978,402x = 1,998,276 × 1,998,276
4. Step 4: Simplify right side
   978,402x = 3,993,106,972,176
5. Step 5: Solve for x
   x = 3,993,106,972,176/978,402
6. Step 6: Final answer
   x = 4,081,253.89