Finding the Third Proportional to 71,222 and 151,978

Step by Step Solution

1. Step 1: Write the proportion equation
   71,222 : 151,978 = 151,978 : x
2. Step 2: Convert to fraction form
   71,222/151,978 = 151,978/x
3. Step 3: Cross multiply
   71,222x = 151,978 × 151,978
4. Step 4: Simplify right side
   71,222x = 23,097,312,484
5. Step 5: Solve for x
   x = 23,097,312,484/71,222
6. Step 6: Final answer
   x = 324,300.25