Finding the Third Proportional to 18,812.50 and 39,181.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,812.50 : 39,181.75 = 39,181.75 : x
2. Step 2: Convert to fraction form
   18,812.50/39,181.75 = 39,181.75/x
3. Step 3: Cross multiply
   18,812.50x = 39,181.75 × 39,181.75
4. Step 4: Simplify right side
   18,812.50x = 1,535,209,533.06
5. Step 5: Solve for x
   x = 1,535,209,533.06/18,812.50
6. Step 6: Final answer
   x = 81,605.82