Finding the Third Proportional to 78,382.50 and 117,390

Step by Step Solution

1. Step 1: Write the proportion equation
   78,382.50 : 117,390 = 117,390 : x
2. Step 2: Convert to fraction form
   78,382.50/117,390 = 117,390/x
3. Step 3: Cross multiply
   78,382.50x = 117,390 × 117,390
4. Step 4: Simplify right side
   78,382.50x = 13,780,412,100
5. Step 5: Solve for x
   x = 13,780,412,100/78,382.50
6. Step 6: Final answer
   x = 175,809.81