Finding the Third Proportional to 140,220 and 212,002

Step by Step Solution

1. Step 1: Write the proportion equation
   140,220 : 212,002 = 212,002 : x
2. Step 2: Convert to fraction form
   140,220/212,002 = 212,002/x
3. Step 3: Cross multiply
   140,220x = 212,002 × 212,002
4. Step 4: Simplify right side
   140,220x = 44,944,848,004
5. Step 5: Solve for x
   x = 44,944,848,004/140,220
6. Step 6: Final answer
   x = 320,530.94