Finding the Third Proportional to 78,889.50 and 161,460

Step by Step Solution

1. Step 1: Write the proportion equation
   78,889.50 : 161,460 = 161,460 : x
2. Step 2: Convert to fraction form
   78,889.50/161,460 = 161,460/x
3. Step 3: Cross multiply
   78,889.50x = 161,460 × 161,460
4. Step 4: Simplify right side
   78,889.50x = 26,069,331,600
5. Step 5: Solve for x
   x = 26,069,331,600/78,889.50
6. Step 6: Final answer
   x = 330,453.76