Finding the Third Proportional to 363,531 and 776,541.25

Step by Step Solution

1. Step 1: Write the proportion equation
   363,531 : 776,541.25 = 776,541.25 : x
2. Step 2: Convert to fraction form
   363,531/776,541.25 = 776,541.25/x
3. Step 3: Cross multiply
   363,531x = 776,541.25 × 776,541.25
4. Step 4: Simplify right side
   363,531x = 603,016,312,951.56
5. Step 5: Solve for x
   x = 603,016,312,951.56/363,531
6. Step 6: Final answer
   x = 1,658,775.49