Finding the Third Proportional to 688,383 and 1,012,315

Step by Step Solution

1. Step 1: Write the proportion equation
   688,383 : 1,012,315 = 1,012,315 : x
2. Step 2: Convert to fraction form
   688,383/1,012,315 = 1,012,315/x
3. Step 3: Cross multiply
   688,383x = 1,012,315 × 1,012,315
4. Step 4: Simplify right side
   688,383x = 1,024,781,659,225
5. Step 5: Solve for x
   x = 1,024,781,659,225/688,383
6. Step 6: Final answer
   x = 1,488,679.50