Finding the Third Proportional to 18,973.50 and 28,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,973.50 : 28,521.50 = 28,521.50 : x
2. Step 2: Convert to fraction form
   18,973.50/28,521.50 = 28,521.50/x
3. Step 3: Cross multiply
   18,973.50x = 28,521.50 × 28,521.50
4. Step 4: Simplify right side
   18,973.50x = 813,475,962.25
5. Step 5: Solve for x
   x = 813,475,962.25/18,973.50
6. Step 6: Final answer
   x = 42,874.32