Finding the Third Proportional to 108,854.50 and 168,136

Step by Step Solution

1. Step 1: Write the proportion equation
   108,854.50 : 168,136 = 168,136 : x
2. Step 2: Convert to fraction form
   108,854.50/168,136 = 168,136/x
3. Step 3: Cross multiply
   108,854.50x = 168,136 × 168,136
4. Step 4: Simplify right side
   108,854.50x = 28,269,714,496
5. Step 5: Solve for x
   x = 28,269,714,496/108,854.50
6. Step 6: Final answer
   x = 259,701.85