Finding the Third Proportional to 64,727.75 and 87,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,727.75 : 87,451.50 = 87,451.50 : x
2. Step 2: Convert to fraction form
   64,727.75/87,451.50 = 87,451.50/x
3. Step 3: Cross multiply
   64,727.75x = 87,451.50 × 87,451.50
4. Step 4: Simplify right side
   64,727.75x = 7,647,764,852.25
5. Step 5: Solve for x
   x = 7,647,764,852.25/64,727.75
6. Step 6: Final answer
   x = 118,152.80