Finding the Third Proportional to 897.84 and 1,379.72

Step by Step Solution

1. Step 1: Write the proportion equation
   897.84 : 1,379.72 = 1,379.72 : x
2. Step 2: Convert to fraction form
   897.84/1,379.72 = 1,379.72/x
3. Step 3: Cross multiply
   897.84x = 1,379.72 × 1,379.72
4. Step 4: Simplify right side
   897.84x = 1,903,623.83
5. Step 5: Solve for x
   x = 1,903,623.83/897.84
6. Step 6: Final answer
   x = 2,120.22