Finding the Third Proportional to 131,525 and 289,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,525 : 289,860.50 = 289,860.50 : x
2. Step 2: Convert to fraction form
   131,525/289,860.50 = 289,860.50/x
3. Step 3: Cross multiply
   131,525x = 289,860.50 × 289,860.50
4. Step 4: Simplify right side
   131,525x = 84,019,109,460.25
5. Step 5: Solve for x
   x = 84,019,109,460.25/131,525
6. Step 6: Final answer
   x = 638,807.14