Finding the Third Proportional to 1,417,878 and 2,179,381

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417,878 : 2,179,381 = 2,179,381 : x
2. Step 2: Convert to fraction form
   1,417,878/2,179,381 = 2,179,381/x
3. Step 3: Cross multiply
   1,417,878x = 2,179,381 × 2,179,381
4. Step 4: Simplify right side
   1,417,878x = 4,749,701,543,161
5. Step 5: Solve for x
   x = 4,749,701,543,161/1,417,878
6. Step 6: Final answer
   x = 3,349,866.17