Finding the Third Proportional to 709,515 and 1,071,648

Step by Step Solution

1. Step 1: Write the proportion equation
   709,515 : 1,071,648 = 1,071,648 : x
2. Step 2: Convert to fraction form
   709,515/1,071,648 = 1,071,648/x
3. Step 3: Cross multiply
   709,515x = 1,071,648 × 1,071,648
4. Step 4: Simplify right side
   709,515x = 1,148,429,435,904
5. Step 5: Solve for x
   x = 1,148,429,435,904/709,515
6. Step 6: Final answer
   x = 1,618,611.92