Finding the Third Proportional to 1,170,342 and 2,515,278

Step by Step Solution

1. Step 1: Write the proportion equation
   1,170,342 : 2,515,278 = 2,515,278 : x
2. Step 2: Convert to fraction form
   1,170,342/2,515,278 = 2,515,278/x
3. Step 3: Cross multiply
   1,170,342x = 2,515,278 × 2,515,278
4. Step 4: Simplify right side
   1,170,342x = 6,326,623,417,284
5. Step 5: Solve for x
   x = 6,326,623,417,284/1,170,342
6. Step 6: Final answer
   x = 5,405,790.29