Finding the Third Proportional to 688,664 and 1,487,984

Step by Step Solution

1. Step 1: Write the proportion equation
   688,664 : 1,487,984 = 1,487,984 : x
2. Step 2: Convert to fraction form
   688,664/1,487,984 = 1,487,984/x
3. Step 3: Cross multiply
   688,664x = 1,487,984 × 1,487,984
4. Step 4: Simplify right side
   688,664x = 2,214,096,384,256
5. Step 5: Solve for x
   x = 2,214,096,384,256/688,664
6. Step 6: Final answer
   x = 3,215,060.44