Finding the Third Proportional to 131,380 and 289,003

Step by Step Solution

1. Step 1: Write the proportion equation
   131,380 : 289,003 = 289,003 : x
2. Step 2: Convert to fraction form
   131,380/289,003 = 289,003/x
3. Step 3: Cross multiply
   131,380x = 289,003 × 289,003
4. Step 4: Simplify right side
   131,380x = 83,522,734,009
5. Step 5: Solve for x
   x = 83,522,734,009/131,380
6. Step 6: Final answer
   x = 635,734.01