Finding the Third Proportional to 39,775.50 and 86,385.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,775.50 : 86,385.75 = 86,385.75 : x
2. Step 2: Convert to fraction form
   39,775.50/86,385.75 = 86,385.75/x
3. Step 3: Cross multiply
   39,775.50x = 86,385.75 × 86,385.75
4. Step 4: Simplify right side
   39,775.50x = 7,462,497,803.06
5. Step 5: Solve for x
   x = 7,462,497,803.06/39,775.50
6. Step 6: Final answer
   x = 187,615.44