Finding the Third Proportional to 78,780.50 and 118,228

Step by Step Solution

1. Step 1: Write the proportion equation
   78,780.50 : 118,228 = 118,228 : x
2. Step 2: Convert to fraction form
   78,780.50/118,228 = 118,228/x
3. Step 3: Cross multiply
   78,780.50x = 118,228 × 118,228
4. Step 4: Simplify right side
   78,780.50x = 13,977,859,984
5. Step 5: Solve for x
   x = 13,977,859,984/78,780.50
6. Step 6: Final answer
   x = 177,427.92