Finding the Third Proportional to 136,206.50 and 288,795

Step by Step Solution

1. Step 1: Write the proportion equation
   136,206.50 : 288,795 = 288,795 : x
2. Step 2: Convert to fraction form
   136,206.50/288,795 = 288,795/x
3. Step 3: Cross multiply
   136,206.50x = 288,795 × 288,795
4. Step 4: Simplify right side
   136,206.50x = 83,402,552,025
5. Step 5: Solve for x
   x = 83,402,552,025/136,206.50
6. Step 6: Final answer
   x = 612,324.32