Finding the Third Proportional to 443,916 and 978,316

Step by Step Solution

1. Step 1: Write the proportion equation
   443,916 : 978,316 = 978,316 : x
2. Step 2: Convert to fraction form
   443,916/978,316 = 978,316/x
3. Step 3: Cross multiply
   443,916x = 978,316 × 978,316
4. Step 4: Simplify right side
   443,916x = 957,102,195,856
5. Step 5: Solve for x
   x = 957,102,195,856/443,916
6. Step 6: Final answer
   x = 2,156,043.48