Finding the Third Proportional to 459,180 and 615,870

Step by Step Solution

1. Step 1: Write the proportion equation
   459,180 : 615,870 = 615,870 : x
2. Step 2: Convert to fraction form
   459,180/615,870 = 615,870/x
3. Step 3: Cross multiply
   459,180x = 615,870 × 615,870
4. Step 4: Simplify right side
   459,180x = 379,295,856,900
5. Step 5: Solve for x
   x = 379,295,856,900/459,180
6. Step 6: Final answer
   x = 826,028.70