Finding the Third Proportional to 31,227.19 and 67,447.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,227.19 : 67,447.69 = 67,447.69 : x
2. Step 2: Convert to fraction form
   31,227.19/67,447.69 = 67,447.69/x
3. Step 3: Cross multiply
   31,227.19x = 67,447.69 × 67,447.69
4. Step 4: Simplify right side
   31,227.19x = 4,549,190,549.10
5. Step 5: Solve for x
   x = 4,549,190,549.10/31,227.19
6. Step 6: Final answer
   x = 145,680.44