Finding the Third Proportional to 450,813,412.69 and 689,627,626.31

Step by Step Solution

1. Step 1: Write the proportion equation
   450,813,412.69 : 689,627,626.31 = 689,627,626.31 : x
2. Step 2: Convert to fraction form
   450,813,412.69/689,627,626.31 = 689,627,626.31/x
3. Step 3: Cross multiply
   450,813,412.69x = 689,627,626.31 × 689,627,626.31
4. Step 4: Simplify right side
   450,813,412.69x = 475,586,262,973,413,120
5. Step 5: Solve for x
   x = 475,586,262,973,413,120/450,813,412.69
6. Step 6: Final answer
   x = 1,054,951,449.07