Finding the Third Proportional to 688,216 and 1,487,132

Step by Step Solution

1. Step 1: Write the proportion equation
   688,216 : 1,487,132 = 1,487,132 : x
2. Step 2: Convert to fraction form
   688,216/1,487,132 = 1,487,132/x
3. Step 3: Cross multiply
   688,216x = 1,487,132 × 1,487,132
4. Step 4: Simplify right side
   688,216x = 2,211,561,585,424
5. Step 5: Solve for x
   x = 2,211,561,585,424/688,216
6. Step 6: Final answer
   x = 3,213,470.17