Finding the Third Proportional to 489,825 and 756,581.63

Step by Step Solution

1. Step 1: Write the proportion equation
   489,825 : 756,581.63 = 756,581.63 : x
2. Step 2: Convert to fraction form
   489,825/756,581.63 = 756,581.63/x
3. Step 3: Cross multiply
   489,825x = 756,581.63 × 756,581.63
4. Step 4: Simplify right side
   489,825x = 572,415,755,287.64
5. Step 5: Solve for x
   x = 572,415,755,287.64/489,825
6. Step 6: Final answer
   x = 1,168,612.78