Finding the Third Proportional to 89,238.50 and 131,389

Step by Step Solution

1. Step 1: Write the proportion equation
   89,238.50 : 131,389 = 131,389 : x
2. Step 2: Convert to fraction form
   89,238.50/131,389 = 131,389/x
3. Step 3: Cross multiply
   89,238.50x = 131,389 × 131,389
4. Step 4: Simplify right side
   89,238.50x = 17,263,069,321
5. Step 5: Solve for x
   x = 17,263,069,321/89,238.50
6. Step 6: Final answer
   x = 193,448.67