Finding the Third Proportional to 897.72 and 1,385.38

Step by Step Solution

1. Step 1: Write the proportion equation
   897.72 : 1,385.38 = 1,385.38 : x
2. Step 2: Convert to fraction form
   897.72/1,385.38 = 1,385.38/x
3. Step 3: Cross multiply
   897.72x = 1,385.38 × 1,385.38
4. Step 4: Simplify right side
   897.72x = 1,919,290.95
5. Step 5: Solve for x
   x = 1,919,290.95/897.72
6. Step 6: Final answer
   x = 2,137.95