Finding the Third Proportional to 1,242,117 and 1,869,395

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,117 : 1,869,395 = 1,869,395 : x
2. Step 2: Convert to fraction form
   1,242,117/1,869,395 = 1,869,395/x
3. Step 3: Cross multiply
   1,242,117x = 1,869,395 × 1,869,395
4. Step 4: Simplify right side
   1,242,117x = 3,494,637,666,025
5. Step 5: Solve for x
   x = 3,494,637,666,025/1,242,117
6. Step 6: Final answer
   x = 2,813,452.89