Finding the Third Proportional to 907.56 and 1,987.94

Step by Step Solution

1. Step 1: Write the proportion equation
   907.56 : 1,987.94 = 1,987.94 : x
2. Step 2: Convert to fraction form
   907.56/1,987.94 = 1,987.94/x
3. Step 3: Cross multiply
   907.56x = 1,987.94 × 1,987.94
4. Step 4: Simplify right side
   907.56x = 3,951,895.50
5. Step 5: Solve for x
   x = 3,951,895.50/907.56
6. Step 6: Final answer
   x = 4,354.41