Finding the Third Proportional to 141,892 and 212,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,892 : 212,447.50 = 212,447.50 : x
2. Step 2: Convert to fraction form
   141,892/212,447.50 = 212,447.50/x
3. Step 3: Cross multiply
   141,892x = 212,447.50 × 212,447.50
4. Step 4: Simplify right side
   141,892x = 45,133,940,256.25
5. Step 5: Solve for x
   x = 45,133,940,256.25/141,892
6. Step 6: Final answer
   x = 318,086.57