Finding the Third Proportional to 89,359.88 and 139,314.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89,359.88 : 139,314.94 = 139,314.94 : x
2. Step 2: Convert to fraction form
   89,359.88/139,314.94 = 139,314.94/x
3. Step 3: Cross multiply
   89,359.88x = 139,314.94 × 139,314.94
4. Step 4: Simplify right side
   89,359.88x = 19,408,651,810.63
5. Step 5: Solve for x
   x = 19,408,651,810.63/89,359.88
6. Step 6: Final answer
   x = 217,196.50