Finding the Third Proportional to 287,068 and 610,422

Step by Step Solution

1. Step 1: Write the proportion equation
   287,068 : 610,422 = 610,422 : x
2. Step 2: Convert to fraction form
   287,068/610,422 = 610,422/x
3. Step 3: Cross multiply
   287,068x = 610,422 × 610,422
4. Step 4: Simplify right side
   287,068x = 372,615,018,084
5. Step 5: Solve for x
   x = 372,615,018,084/287,068
6. Step 6: Final answer
   x = 1,298,002.63