Finding the Third Proportional to 978,144 and 1,496,391

Step by Step Solution

1. Step 1: Write the proportion equation
   978,144 : 1,496,391 = 1,496,391 : x
2. Step 2: Convert to fraction form
   978,144/1,496,391 = 1,496,391/x
3. Step 3: Cross multiply
   978,144x = 1,496,391 × 1,496,391
4. Step 4: Simplify right side
   978,144x = 2,239,186,024,881
5. Step 5: Solve for x
   x = 2,239,186,024,881/978,144
6. Step 6: Final answer
   x = 2,289,219.20