Finding the Third Proportional to 921.93 and 1,355.72

Step by Step Solution

1. Step 1: Write the proportion equation
   921.93 : 1,355.72 = 1,355.72 : x
2. Step 2: Convert to fraction form
   921.93/1,355.72 = 1,355.72/x
3. Step 3: Cross multiply
   921.93x = 1,355.72 × 1,355.72
4. Step 4: Simplify right side
   921.93x = 1,837,981.27
5. Step 5: Solve for x
   x = 1,837,981.27/921.93
6. Step 6: Final answer
   x = 1,993.63