Finding the Third Proportional to 141,920.50 and 212,902

Step by Step Solution

1. Step 1: Write the proportion equation
   141,920.50 : 212,902 = 212,902 : x
2. Step 2: Convert to fraction form
   141,920.50/212,902 = 212,902/x
3. Step 3: Cross multiply
   141,920.50x = 212,902 × 212,902
4. Step 4: Simplify right side
   141,920.50x = 45,327,261,604
5. Step 5: Solve for x
   x = 45,327,261,604/141,920.50
6. Step 6: Final answer
   x = 319,384.88