Finding the Third Proportional to 86,112 and 130,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,112 : 130,990.50 = 130,990.50 : x
2. Step 2: Convert to fraction form
   86,112/130,990.50 = 130,990.50/x
3. Step 3: Cross multiply
   86,112x = 130,990.50 × 130,990.50
4. Step 4: Simplify right side
   86,112x = 17,158,511,090.25
5. Step 5: Solve for x
   x = 17,158,511,090.25/86,112
6. Step 6: Final answer
   x = 199,258.07