Finding the Third Proportional to 18,373.50 and 36,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,373.50 : 36,139.50 = 36,139.50 : x
2. Step 2: Convert to fraction form
   18,373.50/36,139.50 = 36,139.50/x
3. Step 3: Cross multiply
   18,373.50x = 36,139.50 × 36,139.50
4. Step 4: Simplify right side
   18,373.50x = 1,306,063,460.25
5. Step 5: Solve for x
   x = 1,306,063,460.25/18,373.50
6. Step 6: Final answer
   x = 71,084.09