Finding the Third Proportional to 642,866 and 1,400,023

Step by Step Solution

1. Step 1: Write the proportion equation
   642,866 : 1,400,023 = 1,400,023 : x
2. Step 2: Convert to fraction form
   642,866/1,400,023 = 1,400,023/x
3. Step 3: Cross multiply
   642,866x = 1,400,023 × 1,400,023
4. Step 4: Simplify right side
   642,866x = 1,960,064,400,529
5. Step 5: Solve for x
   x = 1,960,064,400,529/642,866
6. Step 6: Final answer
   x = 3,048,947.06