Finding the Third Proportional to 1,185,390 and 2,560,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185,390 : 2,560,312 = 2,560,312 : x
2. Step 2: Convert to fraction form
   1,185,390/2,560,312 = 2,560,312/x
3. Step 3: Cross multiply
   1,185,390x = 2,560,312 × 2,560,312
4. Step 4: Simplify right side
   1,185,390x = 6,555,197,537,344
5. Step 5: Solve for x
   x = 6,555,197,537,344/1,185,390
6. Step 6: Final answer
   x = 5,529,992.27