Finding the Third Proportional to 1,190,409 and 1,788,328

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190,409 : 1,788,328 = 1,788,328 : x
2. Step 2: Convert to fraction form
   1,190,409/1,788,328 = 1,788,328/x
3. Step 3: Cross multiply
   1,190,409x = 1,788,328 × 1,788,328
4. Step 4: Simplify right side
   1,190,409x = 3,198,117,035,584
5. Step 5: Solve for x
   x = 3,198,117,035,584/1,190,409
6. Step 6: Final answer
   x = 2,686,569.94