Finding the Third Proportional to 99,766.69 and 118,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,766.69 : 118,219.50 = 118,219.50 : x
2. Step 2: Convert to fraction form
   99,766.69/118,219.50 = 118,219.50/x
3. Step 3: Cross multiply
   99,766.69x = 118,219.50 × 118,219.50
4. Step 4: Simplify right side
   99,766.69x = 13,975,850,180.25
5. Step 5: Solve for x
   x = 13,975,850,180.25/99,766.69
6. Step 6: Final answer
   x = 140,085.34