Finding the Third Proportional to 15,390 and 35,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,390 : 35,905.50 = 35,905.50 : x
2. Step 2: Convert to fraction form
   15,390/35,905.50 = 35,905.50/x
3. Step 3: Cross multiply
   15,390x = 35,905.50 × 35,905.50
4. Step 4: Simplify right side
   15,390x = 1,289,204,930.25
5. Step 5: Solve for x
   x = 1,289,204,930.25/15,390
6. Step 6: Final answer
   x = 83,769.00