Finding the Third Proportional to 359,946 and 779,508

Step by Step Solution

1. Step 1: Write the proportion equation
   359,946 : 779,508 = 779,508 : x
2. Step 2: Convert to fraction form
   359,946/779,508 = 779,508/x
3. Step 3: Cross multiply
   359,946x = 779,508 × 779,508
4. Step 4: Simplify right side
   359,946x = 607,632,722,064
5. Step 5: Solve for x
   x = 607,632,722,064/359,946
6. Step 6: Final answer
   x = 1,688,121.89