Finding the Third Proportional to 857,679.42 and 1,257,872.89

Step by Step Solution

1. Step 1: Write the proportion equation
   857,679.42 : 1,257,872.89 = 1,257,872.89 : x
2. Step 2: Convert to fraction form
   857,679.42/1,257,872.89 = 1,257,872.89/x
3. Step 3: Cross multiply
   857,679.42x = 1,257,872.89 × 1,257,872.89
4. Step 4: Simplify right side
   857,679.42x = 1,582,244,204,055.79
5. Step 5: Solve for x
   x = 1,582,244,204,055.79/857,679.42
6. Step 6: Final answer
   x = 1,844,796.76