Finding the Third Proportional to 28,820.25 and 67,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,820.25 : 67,315.50 = 67,315.50 : x
2. Step 2: Convert to fraction form
   28,820.25/67,315.50 = 67,315.50/x
3. Step 3: Cross multiply
   28,820.25x = 67,315.50 × 67,315.50
4. Step 4: Simplify right side
   28,820.25x = 4,531,376,540.25
5. Step 5: Solve for x
   x = 4,531,376,540.25/28,820.25
6. Step 6: Final answer
   x = 157,228.91