Finding the Third Proportional to 644,955 and 1,342,842

Step by Step Solution

1. Step 1: Write the proportion equation
   644,955 : 1,342,842 = 1,342,842 : x
2. Step 2: Convert to fraction form
   644,955/1,342,842 = 1,342,842/x
3. Step 3: Cross multiply
   644,955x = 1,342,842 × 1,342,842
4. Step 4: Simplify right side
   644,955x = 1,803,224,636,964
5. Step 5: Solve for x
   x = 1,803,224,636,964/644,955
6. Step 6: Final answer
   x = 2,795,892.17