Finding the Third Proportional to 78,487.50 and 117,554

Step by Step Solution

1. Step 1: Write the proportion equation
   78,487.50 : 117,554 = 117,554 : x
2. Step 2: Convert to fraction form
   78,487.50/117,554 = 117,554/x
3. Step 3: Cross multiply
   78,487.50x = 117,554 × 117,554
4. Step 4: Simplify right side
   78,487.50x = 13,818,942,916
5. Step 5: Solve for x
   x = 13,818,942,916/78,487.50
6. Step 6: Final answer
   x = 176,065.53