Finding the Third Proportional to 1,188,474 and 1,788,399

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188,474 : 1,788,399 = 1,788,399 : x
2. Step 2: Convert to fraction form
   1,188,474/1,788,399 = 1,788,399/x
3. Step 3: Cross multiply
   1,188,474x = 1,788,399 × 1,788,399
4. Step 4: Simplify right side
   1,188,474x = 3,198,370,983,201
5. Step 5: Solve for x
   x = 3,198,370,983,201/1,188,474
6. Step 6: Final answer
   x = 2,691,157.72