Finding the Third Proportional to 31,244.63 and 67,105.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,244.63 : 67,105.13 = 67,105.13 : x
2. Step 2: Convert to fraction form
   31,244.63/67,105.13 = 67,105.13/x
3. Step 3: Cross multiply
   31,244.63x = 67,105.13 × 67,105.13
4. Step 4: Simplify right side
   31,244.63x = 4,503,097,801.27
5. Step 5: Solve for x
   x = 4,503,097,801.27/31,244.63
6. Step 6: Final answer
   x = 144,123.92