Finding the Third Proportional to 1,689,380 and 3,642,820

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,380 : 3,642,820 = 3,642,820 : x
2. Step 2: Convert to fraction form
   1,689,380/3,642,820 = 3,642,820/x
3. Step 3: Cross multiply
   1,689,380x = 3,642,820 × 3,642,820
4. Step 4: Simplify right side
   1,689,380x = 13,270,137,552,400
5. Step 5: Solve for x
   x = 13,270,137,552,400/1,689,380
6. Step 6: Final answer
   x = 7,855,034.13