Finding the Third Proportional to 136,567.50 and 278,556

Step by Step Solution

1. Step 1: Write the proportion equation
   136,567.50 : 278,556 = 278,556 : x
2. Step 2: Convert to fraction form
   136,567.50/278,556 = 278,556/x
3. Step 3: Cross multiply
   136,567.50x = 278,556 × 278,556
4. Step 4: Simplify right side
   136,567.50x = 77,593,445,136
5. Step 5: Solve for x
   x = 77,593,445,136/136,567.50
6. Step 6: Final answer
   x = 568,169.18