Finding the Third Proportional to 63,580.50 and 138,085

Step by Step Solution

1. Step 1: Write the proportion equation
   63,580.50 : 138,085 = 138,085 : x
2. Step 2: Convert to fraction form
   63,580.50/138,085 = 138,085/x
3. Step 3: Cross multiply
   63,580.50x = 138,085 × 138,085
4. Step 4: Simplify right side
   63,580.50x = 19,067,467,225
5. Step 5: Solve for x
   x = 19,067,467,225/63,580.50
6. Step 6: Final answer
   x = 299,894.89