Finding the Third Proportional to 78,756 and 118,102.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,756 : 118,102.50 = 118,102.50 : x
2. Step 2: Convert to fraction form
   78,756/118,102.50 = 118,102.50/x
3. Step 3: Cross multiply
   78,756x = 118,102.50 × 118,102.50
4. Step 4: Simplify right side
   78,756x = 13,948,200,506.25
5. Step 5: Solve for x
   x = 13,948,200,506.25/78,756
6. Step 6: Final answer
   x = 177,106.51