Finding the Third Proportional to 1,128,558 and 1,728,264

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,558 : 1,728,264 = 1,728,264 : x
2. Step 2: Convert to fraction form
   1,128,558/1,728,264 = 1,728,264/x
3. Step 3: Cross multiply
   1,128,558x = 1,728,264 × 1,728,264
4. Step 4: Simplify right side
   1,128,558x = 2,986,896,453,696
5. Step 5: Solve for x
   x = 2,986,896,453,696/1,128,558
6. Step 6: Final answer
   x = 2,646,648.60