Finding the Third Proportional to 626,880 and 1,378,160

Step by Step Solution

1. Step 1: Write the proportion equation
   626,880 : 1,378,160 = 1,378,160 : x
2. Step 2: Convert to fraction form
   626,880/1,378,160 = 1,378,160/x
3. Step 3: Cross multiply
   626,880x = 1,378,160 × 1,378,160
4. Step 4: Simplify right side
   626,880x = 1,899,324,985,600
5. Step 5: Solve for x
   x = 1,899,324,985,600/626,880
6. Step 6: Final answer
   x = 3,029,806.32