Finding the Third Proportional to 156,319.50 and 318,162

Step by Step Solution

1. Step 1: Write the proportion equation
   156,319.50 : 318,162 = 318,162 : x
2. Step 2: Convert to fraction form
   156,319.50/318,162 = 318,162/x
3. Step 3: Cross multiply
   156,319.50x = 318,162 × 318,162
4. Step 4: Simplify right side
   156,319.50x = 101,227,058,244
5. Step 5: Solve for x
   x = 101,227,058,244/156,319.50
6. Step 6: Final answer
   x = 647,565.14