Finding the Third Proportional to 978.50 and 2,056

Step by Step Solution

1. Step 1: Write the proportion equation
   978.50 : 2,056 = 2,056 : x
2. Step 2: Convert to fraction form
   978.50/2,056 = 2,056/x
3. Step 3: Cross multiply
   978.50x = 2,056 × 2,056
4. Step 4: Simplify right side
   978.50x = 4,227,136
5. Step 5: Solve for x
   x = 4,227,136/978.50
6. Step 6: Final answer
   x = 4,320.02