Finding the Third Proportional to 89,317.50 and 138,237

Step by Step Solution

1. Step 1: Write the proportion equation
   89,317.50 : 138,237 = 138,237 : x
2. Step 2: Convert to fraction form
   89,317.50/138,237 = 138,237/x
3. Step 3: Cross multiply
   89,317.50x = 138,237 × 138,237
4. Step 4: Simplify right side
   89,317.50x = 19,109,468,169
5. Step 5: Solve for x
   x = 19,109,468,169/89,317.50
6. Step 6: Final answer
   x = 213,949.88