Finding the Third Proportional to 612,288 and 1,329,660

Step by Step Solution

1. Step 1: Write the proportion equation
   612,288 : 1,329,660 = 1,329,660 : x
2. Step 2: Convert to fraction form
   612,288/1,329,660 = 1,329,660/x
3. Step 3: Cross multiply
   612,288x = 1,329,660 × 1,329,660
4. Step 4: Simplify right side
   612,288x = 1,767,995,715,600
5. Step 5: Solve for x
   x = 1,767,995,715,600/612,288
6. Step 6: Final answer
   x = 2,887,523.05