Finding the Third Proportional to 1,909.50 and 2,917.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.50 : 2,917.88 = 2,917.88 : x
2. Step 2: Convert to fraction form
   1,909.50/2,917.88 = 2,917.88/x
3. Step 3: Cross multiply
   1,909.50x = 2,917.88 × 2,917.88
4. Step 4: Simplify right side
   1,909.50x = 8,513,994.52
5. Step 5: Solve for x
   x = 8,513,994.52/1,909.50
6. Step 6: Final answer
   x = 4,458.76