Finding the Third Proportional to 355,041 and 772,290

Step by Step Solution

1. Step 1: Write the proportion equation
   355,041 : 772,290 = 772,290 : x
2. Step 2: Convert to fraction form
   355,041/772,290 = 772,290/x
3. Step 3: Cross multiply
   355,041x = 772,290 × 772,290
4. Step 4: Simplify right side
   355,041x = 596,431,844,100
5. Step 5: Solve for x
   x = 596,431,844,100/355,041
6. Step 6: Final answer
   x = 1,679,895.69