Finding the Third Proportional to 688,190 and 1,619,362

Step by Step Solution

1. Step 1: Write the proportion equation
   688,190 : 1,619,362 = 1,619,362 : x
2. Step 2: Convert to fraction form
   688,190/1,619,362 = 1,619,362/x
3. Step 3: Cross multiply
   688,190x = 1,619,362 × 1,619,362
4. Step 4: Simplify right side
   688,190x = 2,622,333,287,044
5. Step 5: Solve for x
   x = 2,622,333,287,044/688,190
6. Step 6: Final answer
   x = 3,810,478.63