Finding the Third Proportional to 78,475.50 and 161,087

Step by Step Solution

1. Step 1: Write the proportion equation
   78,475.50 : 161,087 = 161,087 : x
2. Step 2: Convert to fraction form
   78,475.50/161,087 = 161,087/x
3. Step 3: Cross multiply
   78,475.50x = 161,087 × 161,087
4. Step 4: Simplify right side
   78,475.50x = 25,949,021,569
5. Step 5: Solve for x
   x = 25,949,021,569/78,475.50
6. Step 6: Final answer
   x = 330,663.99