Finding the Third Proportional to 354,931.88 and 774,915.61

Step by Step Solution

1. Step 1: Write the proportion equation
   354,931.88 : 774,915.61 = 774,915.61 : x
2. Step 2: Convert to fraction form
   354,931.88/774,915.61 = 774,915.61/x
3. Step 3: Cross multiply
   354,931.88x = 774,915.61 × 774,915.61
4. Step 4: Simplify right side
   354,931.88x = 600,494,201,653.03
5. Step 5: Solve for x
   x = 600,494,201,653.03/354,931.88
6. Step 6: Final answer
   x = 1,691,857.63