Finding the Third Proportional to 1,242,153 and 1,869,447

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,153 : 1,869,447 = 1,869,447 : x
2. Step 2: Convert to fraction form
   1,242,153/1,869,447 = 1,869,447/x
3. Step 3: Cross multiply
   1,242,153x = 1,869,447 × 1,869,447
4. Step 4: Simplify right side
   1,242,153x = 3,494,832,085,809
5. Step 5: Solve for x
   x = 3,494,832,085,809/1,242,153
6. Step 6: Final answer
   x = 2,813,527.87