Finding the Third Proportional to 1,243,377 and 1,869,681

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,377 : 1,869,681 = 1,869,681 : x
2. Step 2: Convert to fraction form
   1,243,377/1,869,681 = 1,869,681/x
3. Step 3: Cross multiply
   1,243,377x = 1,869,681 × 1,869,681
4. Step 4: Simplify right side
   1,243,377x = 3,495,707,041,761
5. Step 5: Solve for x
   x = 3,495,707,041,761/1,243,377
6. Step 6: Final answer
   x = 2,811,461.88