Finding the Third Proportional to 1,921.59 and 4,145.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.59 : 4,145.91 = 4,145.91 : x
2. Step 2: Convert to fraction form
   1,921.59/4,145.91 = 4,145.91/x
3. Step 3: Cross multiply
   1,921.59x = 4,145.91 × 4,145.91
4. Step 4: Simplify right side
   1,921.59x = 17,188,538.63
5. Step 5: Solve for x
   x = 17,188,538.63/1,921.59
6. Step 6: Final answer
   x = 8,944.94