Finding the Third Proportional to 87,660 and 186,241.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,660 : 186,241.50 = 186,241.50 : x
2. Step 2: Convert to fraction form
   87,660/186,241.50 = 186,241.50/x
3. Step 3: Cross multiply
   87,660x = 186,241.50 × 186,241.50
4. Step 4: Simplify right side
   87,660x = 34,685,896,322.25
5. Step 5: Solve for x
   x = 34,685,896,322.25/87,660
6. Step 6: Final answer
   x = 395,686.70