Finding the Third Proportional to 156,928 and 322,118

Step by Step Solution

1. Step 1: Write the proportion equation
   156,928 : 322,118 = 322,118 : x
2. Step 2: Convert to fraction form
   156,928/322,118 = 322,118/x
3. Step 3: Cross multiply
   156,928x = 322,118 × 322,118
4. Step 4: Simplify right side
   156,928x = 103,760,005,924
5. Step 5: Solve for x
   x = 103,760,005,924/156,928
6. Step 6: Final answer
   x = 661,194.98