Finding the Third Proportional to 156,886.50 and 322,116

Step by Step Solution

1. Step 1: Write the proportion equation
   156,886.50 : 322,116 = 322,116 : x
2. Step 2: Convert to fraction form
   156,886.50/322,116 = 322,116/x
3. Step 3: Cross multiply
   156,886.50x = 322,116 × 322,116
4. Step 4: Simplify right side
   156,886.50x = 103,758,717,456
5. Step 5: Solve for x
   x = 103,758,717,456/156,886.50
6. Step 6: Final answer
   x = 661,361.67