Finding the Third Proportional to 978,288 and 2,019,432

Step by Step Solution

1. Step 1: Write the proportion equation
   978,288 : 2,019,432 = 2,019,432 : x
2. Step 2: Convert to fraction form
   978,288/2,019,432 = 2,019,432/x
3. Step 3: Cross multiply
   978,288x = 2,019,432 × 2,019,432
4. Step 4: Simplify right side
   978,288x = 4,078,105,602,624
5. Step 5: Solve for x
   x = 4,078,105,602,624/978,288
6. Step 6: Final answer
   x = 4,168,614.56