Finding the Third Proportional to 137,454 and 212,831.25

Step by Step Solution

1. Step 1: Write the proportion equation
   137,454 : 212,831.25 = 212,831.25 : x
2. Step 2: Convert to fraction form
   137,454/212,831.25 = 212,831.25/x
3. Step 3: Cross multiply
   137,454x = 212,831.25 × 212,831.25
4. Step 4: Simplify right side
   137,454x = 45,297,140,976.56
5. Step 5: Solve for x
   x = 45,297,140,976.56/137,454
6. Step 6: Final answer
   x = 329,544.00