Finding the Third Proportional to 713,479 and 978,358

Step by Step Solution

1. Step 1: Write the proportion equation
   713,479 : 978,358 = 978,358 : x
2. Step 2: Convert to fraction form
   713,479/978,358 = 978,358/x
3. Step 3: Cross multiply
   713,479x = 978,358 × 978,358
4. Step 4: Simplify right side
   713,479x = 957,184,376,164
5. Step 5: Solve for x
   x = 957,184,376,164/713,479
6. Step 6: Final answer
   x = 1,341,573.30