Finding the Third Proportional to 380,940 and 819,210

Step by Step Solution

1. Step 1: Write the proportion equation
   380,940 : 819,210 = 819,210 : x
2. Step 2: Convert to fraction form
   380,940/819,210 = 819,210/x
3. Step 3: Cross multiply
   380,940x = 819,210 × 819,210
4. Step 4: Simplify right side
   380,940x = 671,105,024,100
5. Step 5: Solve for x
   x = 671,105,024,100/380,940
6. Step 6: Final answer
   x = 1,761,707.94