Finding the Third Proportional to 31,280.63 and 68,069.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,280.63 : 68,069.25 = 68,069.25 : x
2. Step 2: Convert to fraction form
   31,280.63/68,069.25 = 68,069.25/x
3. Step 3: Cross multiply
   31,280.63x = 68,069.25 × 68,069.25
4. Step 4: Simplify right side
   31,280.63x = 4,633,422,795.56
5. Step 5: Solve for x
   x = 4,633,422,795.56/31,280.63
6. Step 6: Final answer
   x = 148,124.37