Finding the Third Proportional to 1,358,139 and 2,878,179

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358,139 : 2,878,179 = 2,878,179 : x
2. Step 2: Convert to fraction form
   1,358,139/2,878,179 = 2,878,179/x
3. Step 3: Cross multiply
   1,358,139x = 2,878,179 × 2,878,179
4. Step 4: Simplify right side
   1,358,139x = 8,283,914,356,041
5. Step 5: Solve for x
   x = 8,283,914,356,041/1,358,139
6. Step 6: Final answer
   x = 6,099,459.89