Finding the Third Proportional to 639,965 and 1,374,902

Step by Step Solution

1. Step 1: Write the proportion equation
   639,965 : 1,374,902 = 1,374,902 : x
2. Step 2: Convert to fraction form
   639,965/1,374,902 = 1,374,902/x
3. Step 3: Cross multiply
   639,965x = 1,374,902 × 1,374,902
4. Step 4: Simplify right side
   639,965x = 1,890,355,509,604
5. Step 5: Solve for x
   x = 1,890,355,509,604/639,965
6. Step 6: Final answer
   x = 2,953,842.02