Finding the Third Proportional to 31,758.75 and 67,739.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,758.75 : 67,739.63 = 67,739.63 : x
2. Step 2: Convert to fraction form
   31,758.75/67,739.63 = 67,739.63/x
3. Step 3: Cross multiply
   31,758.75x = 67,739.63 × 67,739.63
4. Step 4: Simplify right side
   31,758.75x = 4,588,656,795.14
5. Step 5: Solve for x
   x = 4,588,656,795.14/31,758.75
6. Step 6: Final answer
   x = 144,484.80