Finding the Third Proportional to 1,490,864 and 3,217,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490,864 : 3,217,780 = 3,217,780 : x
2. Step 2: Convert to fraction form
   1,490,864/3,217,780 = 3,217,780/x
3. Step 3: Cross multiply
   1,490,864x = 3,217,780 × 3,217,780
4. Step 4: Simplify right side
   1,490,864x = 10,354,108,128,400
5. Step 5: Solve for x
   x = 10,354,108,128,400/1,490,864
6. Step 6: Final answer
   x = 6,945,038.67