Finding the Third Proportional to 86,467.50 and 186,021.56

Step by Step Solution

1. Step 1: Write the proportion equation
   86,467.50 : 186,021.56 = 186,021.56 : x
2. Step 2: Convert to fraction form
   86,467.50/186,021.56 = 186,021.56/x
3. Step 3: Cross multiply
   86,467.50x = 186,021.56 × 186,021.56
4. Step 4: Simplify right side
   86,467.50x = 34,604,021,714.94
5. Step 5: Solve for x
   x = 34,604,021,714.94/86,467.50
6. Step 6: Final answer
   x = 400,196.86