Finding the Third Proportional to 1,276,660 and 1,890,340

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276,660 : 1,890,340 = 1,890,340 : x
2. Step 2: Convert to fraction form
   1,276,660/1,890,340 = 1,890,340/x
3. Step 3: Cross multiply
   1,276,660x = 1,890,340 × 1,890,340
4. Step 4: Simplify right side
   1,276,660x = 3,573,385,315,600
5. Step 5: Solve for x
   x = 3,573,385,315,600/1,276,660
6. Step 6: Final answer
   x = 2,799,010.95