Finding the Third Proportional to 1,358,137 and 2,878,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358,137 : 2,878,172 = 2,878,172 : x
2. Step 2: Convert to fraction form
   1,358,137/2,878,172 = 2,878,172/x
3. Step 3: Cross multiply
   1,358,137x = 2,878,172 × 2,878,172
4. Step 4: Simplify right side
   1,358,137x = 8,283,874,061,584
5. Step 5: Solve for x
   x = 8,283,874,061,584/1,358,137
6. Step 6: Final answer
   x = 6,099,439.20