Finding the Third Proportional to 916,842 and 1,401,621

Step by Step Solution

1. Step 1: Write the proportion equation
   916,842 : 1,401,621 = 1,401,621 : x
2. Step 2: Convert to fraction form
   916,842/1,401,621 = 1,401,621/x
3. Step 3: Cross multiply
   916,842x = 1,401,621 × 1,401,621
4. Step 4: Simplify right side
   916,842x = 1,964,541,427,641
5. Step 5: Solve for x
   x = 1,964,541,427,641/916,842
6. Step 6: Final answer
   x = 2,142,726.26