Finding the Third Proportional to 18,892.50 and 28,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,892.50 : 28,384.50 = 28,384.50 : x
2. Step 2: Convert to fraction form
   18,892.50/28,384.50 = 28,384.50/x
3. Step 3: Cross multiply
   18,892.50x = 28,384.50 × 28,384.50
4. Step 4: Simplify right side
   18,892.50x = 805,679,840.25
5. Step 5: Solve for x
   x = 805,679,840.25/18,892.50
6. Step 6: Final answer
   x = 42,645.49