Finding the Third Proportional to 65,109.75 and 86,455.88

Step by Step Solution

1. Step 1: Write the proportion equation
   65,109.75 : 86,455.88 = 86,455.88 : x
2. Step 2: Convert to fraction form
   65,109.75/86,455.88 = 86,455.88/x
3. Step 3: Cross multiply
   65,109.75x = 86,455.88 × 86,455.88
4. Step 4: Simplify right side
   65,109.75x = 7,474,618,322.02
5. Step 5: Solve for x
   x = 7,474,618,322.02/65,109.75
6. Step 6: Final answer
   x = 114,800.29