Finding the Third Proportional to 16,120.13 and 35,509.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,120.13 : 35,509.50 = 35,509.50 : x
2. Step 2: Convert to fraction form
   16,120.13/35,509.50 = 35,509.50/x
3. Step 3: Cross multiply
   16,120.13x = 35,509.50 × 35,509.50
4. Step 4: Simplify right side
   16,120.13x = 1,260,924,590.25
5. Step 5: Solve for x
   x = 1,260,924,590.25/16,120.13
6. Step 6: Final answer
   x = 78,220.52