Finding the Third Proportional to 360,797 and 779,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,797 : 779,407.50 = 779,407.50 : x
2. Step 2: Convert to fraction form
   360,797/779,407.50 = 779,407.50/x
3. Step 3: Cross multiply
   360,797x = 779,407.50 × 779,407.50
4. Step 4: Simplify right side
   360,797x = 607,476,051,056.25
5. Step 5: Solve for x
   x = 607,476,051,056.25/360,797
6. Step 6: Final answer
   x = 1,683,705.94