Finding the Third Proportional to 78,805.50 and 118,287

Step by Step Solution

1. Step 1: Write the proportion equation
   78,805.50 : 118,287 = 118,287 : x
2. Step 2: Convert to fraction form
   78,805.50/118,287 = 118,287/x
3. Step 3: Cross multiply
   78,805.50x = 118,287 × 118,287
4. Step 4: Simplify right side
   78,805.50x = 13,991,814,369
5. Step 5: Solve for x
   x = 13,991,814,369/78,805.50
6. Step 6: Final answer
   x = 177,548.70