Finding the Third Proportional to 359,766 and 779,148

Step by Step Solution

1. Step 1: Write the proportion equation
   359,766 : 779,148 = 779,148 : x
2. Step 2: Convert to fraction form
   359,766/779,148 = 779,148/x
3. Step 3: Cross multiply
   359,766x = 779,148 × 779,148
4. Step 4: Simplify right side
   359,766x = 607,071,605,904
5. Step 5: Solve for x
   x = 607,071,605,904/359,766
6. Step 6: Final answer
   x = 1,687,406.83