Finding the Third Proportional to 15,983.50 and 35,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,983.50 : 35,139.50 = 35,139.50 : x
2. Step 2: Convert to fraction form
   15,983.50/35,139.50 = 35,139.50/x
3. Step 3: Cross multiply
   15,983.50x = 35,139.50 × 35,139.50
4. Step 4: Simplify right side
   15,983.50x = 1,234,784,460.25
5. Step 5: Solve for x
   x = 1,234,784,460.25/15,983.50
6. Step 6: Final answer
   x = 77,253.70