Finding the Third Proportional to 909.56 and 1,994.63

Step by Step Solution

1. Step 1: Write the proportion equation
   909.56 : 1,994.63 = 1,994.63 : x
2. Step 2: Convert to fraction form
   909.56/1,994.63 = 1,994.63/x
3. Step 3: Cross multiply
   909.56x = 1,994.63 × 1,994.63
4. Step 4: Simplify right side
   909.56x = 3,978,528.89
5. Step 5: Solve for x
   x = 3,978,528.89/909.56
6. Step 6: Final answer
   x = 4,374.11