Finding the Third Proportional to 18,513.56 and 39,490.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,513.56 : 39,490.88 = 39,490.88 : x
2. Step 2: Convert to fraction form
   18,513.56/39,490.88 = 39,490.88/x
3. Step 3: Cross multiply
   18,513.56x = 39,490.88 × 39,490.88
4. Step 4: Simplify right side
   18,513.56x = 1,559,529,208.27
5. Step 5: Solve for x
   x = 1,559,529,208.27/18,513.56
6. Step 6: Final answer
   x = 84,237.12