Finding the Third Proportional to 140,930 and 218,124

Step by Step Solution

1. Step 1: Write the proportion equation
   140,930 : 218,124 = 218,124 : x
2. Step 2: Convert to fraction form
   140,930/218,124 = 218,124/x
3. Step 3: Cross multiply
   140,930x = 218,124 × 218,124
4. Step 4: Simplify right side
   140,930x = 47,578,079,376
5. Step 5: Solve for x
   x = 47,578,079,376/140,930
6. Step 6: Final answer
   x = 337,600.79