Finding the Third Proportional to 688,660 and 1,499,264

Step by Step Solution

1. Step 1: Write the proportion equation
   688,660 : 1,499,264 = 1,499,264 : x
2. Step 2: Convert to fraction form
   688,660/1,499,264 = 1,499,264/x
3. Step 3: Cross multiply
   688,660x = 1,499,264 × 1,499,264
4. Step 4: Simplify right side
   688,660x = 2,247,792,541,696
5. Step 5: Solve for x
   x = 2,247,792,541,696/688,660
6. Step 6: Final answer
   x = 3,264,009.15