Finding the Third Proportional to 1,363.55 and 2,111.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.55 : 2,111.77 = 2,111.77 : x
2. Step 2: Convert to fraction form
   1,363.55/2,111.77 = 2,111.77/x
3. Step 3: Cross multiply
   1,363.55x = 2,111.77 × 2,111.77
4. Step 4: Simplify right side
   1,363.55x = 4,459,591.18
5. Step 5: Solve for x
   x = 4,459,591.18/1,363.55
6. Step 6: Final answer
   x = 3,270.57