Finding the Third Proportional to 489,783 and 756,510.25

Step by Step Solution

1. Step 1: Write the proportion equation
   489,783 : 756,510.25 = 756,510.25 : x
2. Step 2: Convert to fraction form
   489,783/756,510.25 = 756,510.25/x
3. Step 3: Cross multiply
   489,783x = 756,510.25 × 756,510.25
4. Step 4: Simplify right side
   489,783x = 572,307,758,355.06
5. Step 5: Solve for x
   x = 572,307,758,355.06/489,783
6. Step 6: Final answer
   x = 1,168,492.49