Finding the Third Proportional to 59,478.75 and 87,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,478.75 : 87,574.50 = 87,574.50 : x
2. Step 2: Convert to fraction form
   59,478.75/87,574.50 = 87,574.50/x
3. Step 3: Cross multiply
   59,478.75x = 87,574.50 × 87,574.50
4. Step 4: Simplify right side
   59,478.75x = 7,669,293,050.25
5. Step 5: Solve for x
   x = 7,669,293,050.25/59,478.75
6. Step 6: Final answer
   x = 128,941.73