Finding the Third Proportional to 724,758 and 1,705,311

Step by Step Solution

1. Step 1: Write the proportion equation
   724,758 : 1,705,311 = 1,705,311 : x
2. Step 2: Convert to fraction form
   724,758/1,705,311 = 1,705,311/x
3. Step 3: Cross multiply
   724,758x = 1,705,311 × 1,705,311
4. Step 4: Simplify right side
   724,758x = 2,908,085,606,721
5. Step 5: Solve for x
   x = 2,908,085,606,721/724,758
6. Step 6: Final answer
   x = 4,012,491.90