Finding the Third Proportional to 146,224 and 318,890

Step by Step Solution

1. Step 1: Write the proportion equation
   146,224 : 318,890 = 318,890 : x
2. Step 2: Convert to fraction form
   146,224/318,890 = 318,890/x
3. Step 3: Cross multiply
   146,224x = 318,890 × 318,890
4. Step 4: Simplify right side
   146,224x = 101,690,832,100
5. Step 5: Solve for x
   x = 101,690,832,100/146,224
6. Step 6: Final answer
   x = 695,445.56