Finding the Third Proportional to 411,839.50 and 902,411

Step by Step Solution

1. Step 1: Write the proportion equation
   411,839.50 : 902,411 = 902,411 : x
2. Step 2: Convert to fraction form
   411,839.50/902,411 = 902,411/x
3. Step 3: Cross multiply
   411,839.50x = 902,411 × 902,411
4. Step 4: Simplify right side
   411,839.50x = 814,345,612,921
5. Step 5: Solve for x
   x = 814,345,612,921/411,839.50
6. Step 6: Final answer
   x = 1,977,337.32