Finding the Third Proportional to 1,311,490 and 2,023,278

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,490 : 2,023,278 = 2,023,278 : x
2. Step 2: Convert to fraction form
   1,311,490/2,023,278 = 2,023,278/x
3. Step 3: Cross multiply
   1,311,490x = 2,023,278 × 2,023,278
4. Step 4: Simplify right side
   1,311,490x = 4,093,653,865,284
5. Step 5: Solve for x
   x = 4,093,653,865,284/1,311,490
6. Step 6: Final answer
   x = 3,121,376.35