Finding the Third Proportional to 858.88 and 1,777.38

Step by Step Solution

1. Step 1: Write the proportion equation
   858.88 : 1,777.38 = 1,777.38 : x
2. Step 2: Convert to fraction form
   858.88/1,777.38 = 1,777.38/x
3. Step 3: Cross multiply
   858.88x = 1,777.38 × 1,777.38
4. Step 4: Simplify right side
   858.88x = 3,159,061.89
5. Step 5: Solve for x
   x = 3,159,061.89/858.88
6. Step 6: Final answer
   x = 3,678.14