Finding the Third Proportional to 1,387,830 and 2,177,589

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387,830 : 2,177,589 = 2,177,589 : x
2. Step 2: Convert to fraction form
   1,387,830/2,177,589 = 2,177,589/x
3. Step 3: Cross multiply
   1,387,830x = 2,177,589 × 2,177,589
4. Step 4: Simplify right side
   1,387,830x = 4,741,893,852,921
5. Step 5: Solve for x
   x = 4,741,893,852,921/1,387,830
6. Step 6: Final answer
   x = 3,416,768.52