Finding the Third Proportional to 31,511.25 and 67,259.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,511.25 : 67,259.25 = 67,259.25 : x
2. Step 2: Convert to fraction form
   31,511.25/67,259.25 = 67,259.25/x
3. Step 3: Cross multiply
   31,511.25x = 67,259.25 × 67,259.25
4. Step 4: Simplify right side
   31,511.25x = 4,523,806,710.56
5. Step 5: Solve for x
   x = 4,523,806,710.56/31,511.25
6. Step 6: Final answer
   x = 143,561.64