Finding the Third Proportional to 31,119.19 and 67,478.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,119.19 : 67,478.06 = 67,478.06 : x
2. Step 2: Convert to fraction form
   31,119.19/67,478.06 = 67,478.06/x
3. Step 3: Cross multiply
   31,119.19x = 67,478.06 × 67,478.06
4. Step 4: Simplify right side
   31,119.19x = 4,553,288,918.75
5. Step 5: Solve for x
   x = 4,553,288,918.75/31,119.19
6. Step 6: Final answer
   x = 146,317.73