Finding the Third Proportional to 31,279.13 and 68,944.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,279.13 : 68,944.50 = 68,944.50 : x
2. Step 2: Convert to fraction form
   31,279.13/68,944.50 = 68,944.50/x
3. Step 3: Cross multiply
   31,279.13x = 68,944.50 × 68,944.50
4. Step 4: Simplify right side
   31,279.13x = 4,753,344,080.25
5. Step 5: Solve for x
   x = 4,753,344,080.25/31,279.13
6. Step 6: Final answer
   x = 151,965.38