Finding the Third Proportional to 31,300.50 and 67,155

Step by Step Solution

1. Step 1: Write the proportion equation
   31,300.50 : 67,155 = 67,155 : x
2. Step 2: Convert to fraction form
   31,300.50/67,155 = 67,155/x
3. Step 3: Cross multiply
   31,300.50x = 67,155 × 67,155
4. Step 4: Simplify right side
   31,300.50x = 4,509,794,025
5. Step 5: Solve for x
   x = 4,509,794,025/31,300.50
6. Step 6: Final answer
   x = 144,080.57