Finding the Third Proportional to 2,690,858 and 4,155,265

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690,858 : 4,155,265 = 4,155,265 : x
2. Step 2: Convert to fraction form
   2,690,858/4,155,265 = 4,155,265/x
3. Step 3: Cross multiply
   2,690,858x = 4,155,265 × 4,155,265
4. Step 4: Simplify right side
   2,690,858x = 17,266,227,220,225
5. Step 5: Solve for x
   x = 17,266,227,220,225/2,690,858
6. Step 6: Final answer
   x = 6,416,625.19