Finding the Third Proportional to 140,994 and 218,664

Step by Step Solution

1. Step 1: Write the proportion equation
   140,994 : 218,664 = 218,664 : x
2. Step 2: Convert to fraction form
   140,994/218,664 = 218,664/x
3. Step 3: Cross multiply
   140,994x = 218,664 × 218,664
4. Step 4: Simplify right side
   140,994x = 47,813,944,896
5. Step 5: Solve for x
   x = 47,813,944,896/140,994
6. Step 6: Final answer
   x = 339,120.42