Finding the Third Proportional to 688,143 and 1,487,003

Step by Step Solution

1. Step 1: Write the proportion equation
   688,143 : 1,487,003 = 1,487,003 : x
2. Step 2: Convert to fraction form
   688,143/1,487,003 = 1,487,003/x
3. Step 3: Cross multiply
   688,143x = 1,487,003 × 1,487,003
4. Step 4: Simplify right side
   688,143x = 2,211,177,922,009
5. Step 5: Solve for x
   x = 2,211,177,922,009/688,143
6. Step 6: Final answer
   x = 3,213,253.53