Finding the Third Proportional to 131,874 and 289,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,874 : 289,018.50 = 289,018.50 : x
2. Step 2: Convert to fraction form
   131,874/289,018.50 = 289,018.50/x
3. Step 3: Cross multiply
   131,874x = 289,018.50 × 289,018.50
4. Step 4: Simplify right side
   131,874x = 83,531,693,342.25
5. Step 5: Solve for x
   x = 83,531,693,342.25/131,874
6. Step 6: Final answer
   x = 633,420.49