Finding the Third Proportional to 1,225.78 and 1,870.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.78 : 1,870.73 = 1,870.73 : x
2. Step 2: Convert to fraction form
   1,225.78/1,870.73 = 1,870.73/x
3. Step 3: Cross multiply
   1,225.78x = 1,870.73 × 1,870.73
4. Step 4: Simplify right side
   1,225.78x = 3,499,647.10
5. Step 5: Solve for x
   x = 3,499,647.10/1,225.78
6. Step 6: Final answer
   x = 2,855.03