Finding the Third Proportional to 359,862 and 774,210

Step by Step Solution

1. Step 1: Write the proportion equation
   359,862 : 774,210 = 774,210 : x
2. Step 2: Convert to fraction form
   359,862/774,210 = 774,210/x
3. Step 3: Cross multiply
   359,862x = 774,210 × 774,210
4. Step 4: Simplify right side
   359,862x = 599,401,124,100
5. Step 5: Solve for x
   x = 599,401,124,100/359,862
6. Step 6: Final answer
   x = 1,665,641.62