Finding the Third Proportional to 74,980 and 158,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   74,980 : 158,388.50 = 158,388.50 : x
2. Step 2: Convert to fraction form
   74,980/158,388.50 = 158,388.50/x
3. Step 3: Cross multiply
   74,980x = 158,388.50 × 158,388.50
4. Step 4: Simplify right side
   74,980x = 25,086,916,932.25
5. Step 5: Solve for x
   x = 25,086,916,932.25/74,980
6. Step 6: Final answer
   x = 334,581.45