Finding the Third Proportional to 118,624 and 280,008

Step by Step Solution

1. Step 1: Write the proportion equation
   118,624 : 280,008 = 280,008 : x
2. Step 2: Convert to fraction form
   118,624/280,008 = 280,008/x
3. Step 3: Cross multiply
   118,624x = 280,008 × 280,008
4. Step 4: Simplify right side
   118,624x = 78,404,480,064
5. Step 5: Solve for x
   x = 78,404,480,064/118,624
6. Step 6: Final answer
   x = 660,949.56