Finding the Third Proportional to 28,178 and 43,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,178 : 43,608.50 = 43,608.50 : x
2. Step 2: Convert to fraction form
   28,178/43,608.50 = 43,608.50/x
3. Step 3: Cross multiply
   28,178x = 43,608.50 × 43,608.50
4. Step 4: Simplify right side
   28,178x = 1,901,701,272.25
5. Step 5: Solve for x
   x = 1,901,701,272.25/28,178
6. Step 6: Final answer
   x = 67,488.87