Finding the Third Proportional to 118,696.50 and 280,197

Step by Step Solution

1. Step 1: Write the proportion equation
   118,696.50 : 280,197 = 280,197 : x
2. Step 2: Convert to fraction form
   118,696.50/280,197 = 280,197/x
3. Step 3: Cross multiply
   118,696.50x = 280,197 × 280,197
4. Step 4: Simplify right side
   118,696.50x = 78,510,358,809
5. Step 5: Solve for x
   x = 78,510,358,809/118,696.50
6. Step 6: Final answer
   x = 661,437.86