Finding the Third Proportional to 615.30 and 1,054.27

Step by Step Solution

1. Step 1: Write the proportion equation
   615.30 : 1,054.27 = 1,054.27 : x
2. Step 2: Convert to fraction form
   615.30/1,054.27 = 1,054.27/x
3. Step 3: Cross multiply
   615.30x = 1,054.27 × 1,054.27
4. Step 4: Simplify right side
   615.30x = 1,111,476.01
5. Step 5: Solve for x
   x = 1,111,476.01/615.30
6. Step 6: Final answer
   x = 1,806.38