Finding the Third Proportional to 890,412 and 1,972,902

Step by Step Solution

1. Step 1: Write the proportion equation
   890,412 : 1,972,902 = 1,972,902 : x
2. Step 2: Convert to fraction form
   890,412/1,972,902 = 1,972,902/x
3. Step 3: Cross multiply
   890,412x = 1,972,902 × 1,972,902
4. Step 4: Simplify right side
   890,412x = 3,892,342,301,604
5. Step 5: Solve for x
   x = 3,892,342,301,604/890,412
6. Step 6: Final answer
   x = 4,371,394.70