Finding the Third Proportional to 28,309.50 and 66,881.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,309.50 : 66,881.25 = 66,881.25 : x
2. Step 2: Convert to fraction form
   28,309.50/66,881.25 = 66,881.25/x
3. Step 3: Cross multiply
   28,309.50x = 66,881.25 × 66,881.25
4. Step 4: Simplify right side
   28,309.50x = 4,473,101,601.56
5. Step 5: Solve for x
   x = 4,473,101,601.56/28,309.50
6. Step 6: Final answer
   x = 158,007.09