Finding the Third Proportional to 688,870 and 1,459,688

Step by Step Solution

1. Step 1: Write the proportion equation
   688,870 : 1,459,688 = 1,459,688 : x
2. Step 2: Convert to fraction form
   688,870/1,459,688 = 1,459,688/x
3. Step 3: Cross multiply
   688,870x = 1,459,688 × 1,459,688
4. Step 4: Simplify right side
   688,870x = 2,130,689,057,344
5. Step 5: Solve for x
   x = 2,130,689,057,344/688,870
6. Step 6: Final answer
   x = 3,093,020.54