Finding the Third Proportional to 28,390 and 43,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,390 : 43,273.50 = 43,273.50 : x
2. Step 2: Convert to fraction form
   28,390/43,273.50 = 43,273.50/x
3. Step 3: Cross multiply
   28,390x = 43,273.50 × 43,273.50
4. Step 4: Simplify right side
   28,390x = 1,872,595,802.25
5. Step 5: Solve for x
   x = 1,872,595,802.25/28,390
6. Step 6: Final answer
   x = 65,959.70