Finding the Third Proportional to 86,865 and 130,506.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,865 : 130,506.50 = 130,506.50 : x
2. Step 2: Convert to fraction form
   86,865/130,506.50 = 130,506.50/x
3. Step 3: Cross multiply
   86,865x = 130,506.50 × 130,506.50
4. Step 4: Simplify right side
   86,865x = 17,031,946,542.25
5. Step 5: Solve for x
   x = 17,031,946,542.25/86,865
6. Step 6: Final answer
   x = 196,073.75