Finding the Third Proportional to 82,320 and 130,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,320 : 130,909.50 = 130,909.50 : x
2. Step 2: Convert to fraction form
   82,320/130,909.50 = 130,909.50/x
3. Step 3: Cross multiply
   82,320x = 130,909.50 × 130,909.50
4. Step 4: Simplify right side
   82,320x = 17,137,297,190.25
5. Step 5: Solve for x
   x = 17,137,297,190.25/82,320
6. Step 6: Final answer
   x = 208,179.02