Finding the Third Proportional to 1,243,380 and 1,869,687

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,380 : 1,869,687 = 1,869,687 : x
2. Step 2: Convert to fraction form
   1,243,380/1,869,687 = 1,869,687/x
3. Step 3: Cross multiply
   1,243,380x = 1,869,687 × 1,869,687
4. Step 4: Simplify right side
   1,243,380x = 3,495,729,477,969
5. Step 5: Solve for x
   x = 3,495,729,477,969/1,243,380
6. Step 6: Final answer
   x = 2,811,473.14