Finding the Third Proportional to 2,645,436 and 4,088,790

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645,436 : 4,088,790 = 4,088,790 : x
2. Step 2: Convert to fraction form
   2,645,436/4,088,790 = 4,088,790/x
3. Step 3: Cross multiply
   2,645,436x = 4,088,790 × 4,088,790
4. Step 4: Simplify right side
   2,645,436x = 16,718,203,664,100
5. Step 5: Solve for x
   x = 16,718,203,664,100/2,645,436
6. Step 6: Final answer
   x = 6,319,640.19