Finding the Third Proportional to 138,327.75 and 212,922

Step by Step Solution

1. Step 1: Write the proportion equation
   138,327.75 : 212,922 = 212,922 : x
2. Step 2: Convert to fraction form
   138,327.75/212,922 = 212,922/x
3. Step 3: Cross multiply
   138,327.75x = 212,922 × 212,922
4. Step 4: Simplify right side
   138,327.75x = 45,335,778,084
5. Step 5: Solve for x
   x = 45,335,778,084/138,327.75
6. Step 6: Final answer
   x = 327,741.74