Finding the Third Proportional to 156,099 and 320,058

Step by Step Solution

1. Step 1: Write the proportion equation
   156,099 : 320,058 = 320,058 : x
2. Step 2: Convert to fraction form
   156,099/320,058 = 320,058/x
3. Step 3: Cross multiply
   156,099x = 320,058 × 320,058
4. Step 4: Simplify right side
   156,099x = 102,437,123,364
5. Step 5: Solve for x
   x = 102,437,123,364/156,099
6. Step 6: Final answer
   x = 656,231.77