Finding the Third Proportional to 39,136.69 and 85,657.88

Step by Step Solution

1. Step 1: Write the proportion equation
   39,136.69 : 85,657.88 = 85,657.88 : x
2. Step 2: Convert to fraction form
   39,136.69/85,657.88 = 85,657.88/x
3. Step 3: Cross multiply
   39,136.69x = 85,657.88 × 85,657.88
4. Step 4: Simplify right side
   39,136.69x = 7,337,271,549.52
5. Step 5: Solve for x
   x = 7,337,271,549.52/39,136.69
6. Step 6: Final answer
   x = 187,478.09