Finding the Third Proportional to 1,380,880 and 1,865,664

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,880 : 1,865,664 = 1,865,664 : x
2. Step 2: Convert to fraction form
   1,380,880/1,865,664 = 1,865,664/x
3. Step 3: Cross multiply
   1,380,880x = 1,865,664 × 1,865,664
4. Step 4: Simplify right side
   1,380,880x = 3,480,702,160,896
5. Step 5: Solve for x
   x = 3,480,702,160,896/1,380,880
6. Step 6: Final answer
   x = 2,520,640.58