Finding the Third Proportional to 642,917 and 1,400,092

Step by Step Solution

1. Step 1: Write the proportion equation
   642,917 : 1,400,092 = 1,400,092 : x
2. Step 2: Convert to fraction form
   642,917/1,400,092 = 1,400,092/x
3. Step 3: Cross multiply
   642,917x = 1,400,092 × 1,400,092
4. Step 4: Simplify right side
   642,917x = 1,960,257,608,464
5. Step 5: Solve for x
   x = 1,960,257,608,464/642,917
6. Step 6: Final answer
   x = 3,049,005.72