Finding the Third Proportional to 688,338 and 1,012,248

Step by Step Solution

1. Step 1: Write the proportion equation
   688,338 : 1,012,248 = 1,012,248 : x
2. Step 2: Convert to fraction form
   688,338/1,012,248 = 1,012,248/x
3. Step 3: Cross multiply
   688,338x = 1,012,248 × 1,012,248
4. Step 4: Simplify right side
   688,338x = 1,024,646,013,504
5. Step 5: Solve for x
   x = 1,024,646,013,504/688,338
6. Step 6: Final answer
   x = 1,488,579.76