Finding the Third Proportional to 978,696 and 2,156,072

Step by Step Solution

1. Step 1: Write the proportion equation
   978,696 : 2,156,072 = 2,156,072 : x
2. Step 2: Convert to fraction form
   978,696/2,156,072 = 2,156,072/x
3. Step 3: Cross multiply
   978,696x = 2,156,072 × 2,156,072
4. Step 4: Simplify right side
   978,696x = 4,648,646,469,184
5. Step 5: Solve for x
   x = 4,648,646,469,184/978,696
6. Step 6: Final answer
   x = 4,749,837.00