Finding the Third Proportional to 86,290.50 and 185,389

Step by Step Solution

1. Step 1: Write the proportion equation
   86,290.50 : 185,389 = 185,389 : x
2. Step 2: Convert to fraction form
   86,290.50/185,389 = 185,389/x
3. Step 3: Cross multiply
   86,290.50x = 185,389 × 185,389
4. Step 4: Simplify right side
   86,290.50x = 34,369,081,321
5. Step 5: Solve for x
   x = 34,369,081,321/86,290.50
6. Step 6: Final answer
   x = 398,295.08