Finding the Third Proportional to 642,910 and 1,400,114

Step by Step Solution

1. Step 1: Write the proportion equation
   642,910 : 1,400,114 = 1,400,114 : x
2. Step 2: Convert to fraction form
   642,910/1,400,114 = 1,400,114/x
3. Step 3: Cross multiply
   642,910x = 1,400,114 × 1,400,114
4. Step 4: Simplify right side
   642,910x = 1,960,319,212,996
5. Step 5: Solve for x
   x = 1,960,319,212,996/642,910
6. Step 6: Final answer
   x = 3,049,134.74