Finding the Third Proportional to 1,113.12 and 2,402.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.12 : 2,402.79 = 2,402.79 : x
2. Step 2: Convert to fraction form
   1,113.12/2,402.79 = 2,402.79/x
3. Step 3: Cross multiply
   1,113.12x = 2,402.79 × 2,402.79
4. Step 4: Simplify right side
   1,113.12x = 5,773,395.28
5. Step 5: Solve for x
   x = 5,773,395.28/1,113.12
6. Step 6: Final answer
   x = 5,186.69