Finding the Third Proportional to 146,213 and 318,850

Step by Step Solution

1. Step 1: Write the proportion equation
   146,213 : 318,850 = 318,850 : x
2. Step 2: Convert to fraction form
   146,213/318,850 = 318,850/x
3. Step 3: Cross multiply
   146,213x = 318,850 × 318,850
4. Step 4: Simplify right side
   146,213x = 101,665,322,500
5. Step 5: Solve for x
   x = 101,665,322,500/146,213
6. Step 6: Final answer
   x = 695,323.42