Finding the Third Proportional to 28,309.50 and 68,100.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,309.50 : 68,100.75 = 68,100.75 : x
2. Step 2: Convert to fraction form
   28,309.50/68,100.75 = 68,100.75/x
3. Step 3: Cross multiply
   28,309.50x = 68,100.75 × 68,100.75
4. Step 4: Simplify right side
   28,309.50x = 4,637,712,150.56
5. Step 5: Solve for x
   x = 4,637,712,150.56/28,309.50
6. Step 6: Final answer
   x = 163,821.76