Finding the Third Proportional to 1,120 and 2,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120 : 2,406.50 = 2,406.50 : x
2. Step 2: Convert to fraction form
   1,120/2,406.50 = 2,406.50/x
3. Step 3: Cross multiply
   1,120x = 2,406.50 × 2,406.50
4. Step 4: Simplify right side
   1,120x = 5,791,242.25
5. Step 5: Solve for x
   x = 5,791,242.25/1,120
6. Step 6: Final answer
   x = 5,170.75