Finding the Third Proportional to 201,061.50 and 312,617.25

Step by Step Solution

1. Step 1: Write the proportion equation
   201,061.50 : 312,617.25 = 312,617.25 : x
2. Step 2: Convert to fraction form
   201,061.50/312,617.25 = 312,617.25/x
3. Step 3: Cross multiply
   201,061.50x = 312,617.25 × 312,617.25
4. Step 4: Simplify right side
   201,061.50x = 97,729,544,997.56
5. Step 5: Solve for x
   x = 97,729,544,997.56/201,061.50
6. Step 6: Final answer
   x = 486,067.92