Finding the Third Proportional to 156,910.50 and 322,164

Step by Step Solution

1. Step 1: Write the proportion equation
   156,910.50 : 322,164 = 322,164 : x
2. Step 2: Convert to fraction form
   156,910.50/322,164 = 322,164/x
3. Step 3: Cross multiply
   156,910.50x = 322,164 × 322,164
4. Step 4: Simplify right side
   156,910.50x = 103,789,642,896
5. Step 5: Solve for x
   x = 103,789,642,896/156,910.50
6. Step 6: Final answer
   x = 661,457.60