Finding the Third Proportional to 71,989.88 and 99,236.63

Step by Step Solution

1. Step 1: Write the proportion equation
   71,989.88 : 99,236.63 = 99,236.63 : x
2. Step 2: Convert to fraction form
   71,989.88/99,236.63 = 99,236.63/x
3. Step 3: Cross multiply
   71,989.88x = 99,236.63 × 99,236.63
4. Step 4: Simplify right side
   71,989.88x = 9,847,907,741.39
5. Step 5: Solve for x
   x = 9,847,907,741.39/71,989.88
6. Step 6: Final answer
   x = 136,795.73