Finding the Third Proportional to 278,076 and 607,144

Step by Step Solution

1. Step 1: Write the proportion equation
   278,076 : 607,144 = 607,144 : x
2. Step 2: Convert to fraction form
   278,076/607,144 = 607,144/x
3. Step 3: Cross multiply
   278,076x = 607,144 × 607,144
4. Step 4: Simplify right side
   278,076x = 368,623,836,736
5. Step 5: Solve for x
   x = 368,623,836,736/278,076
6. Step 6: Final answer
   x = 1,325,622.62