Finding the Third Proportional to 72,328 and 148,178

Step by Step Solution

1. Step 1: Write the proportion equation
   72,328 : 148,178 = 148,178 : x
2. Step 2: Convert to fraction form
   72,328/148,178 = 148,178/x
3. Step 3: Cross multiply
   72,328x = 148,178 × 148,178
4. Step 4: Simplify right side
   72,328x = 21,956,719,684
5. Step 5: Solve for x
   x = 21,956,719,684/72,328
6. Step 6: Final answer
   x = 303,571.50