Finding the Third Proportional to 688,959 and 1,013,026.50

Step by Step Solution

1. Step 1: Write the proportion equation
   688,959 : 1,013,026.50 = 1,013,026.50 : x
2. Step 2: Convert to fraction form
   688,959/1,013,026.50 = 1,013,026.50/x
3. Step 3: Cross multiply
   688,959x = 1,013,026.50 × 1,013,026.50
4. Step 4: Simplify right side
   688,959x = 1,026,222,689,702.25
5. Step 5: Solve for x
   x = 1,026,222,689,702.25/688,959
6. Step 6: Final answer
   x = 1,489,526.50