Finding the Third Proportional to 487,084 and 764,280

Step by Step Solution

1. Step 1: Write the proportion equation
   487,084 : 764,280 = 764,280 : x
2. Step 2: Convert to fraction form
   487,084/764,280 = 764,280/x
3. Step 3: Cross multiply
   487,084x = 764,280 × 764,280
4. Step 4: Simplify right side
   487,084x = 584,123,918,400
5. Step 5: Solve for x
   x = 584,123,918,400/487,084
6. Step 6: Final answer
   x = 1,199,226.25