Finding the Third Proportional to 91,017 and 138,361.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,017 : 138,361.50 = 138,361.50 : x
2. Step 2: Convert to fraction form
   91,017/138,361.50 = 138,361.50/x
3. Step 3: Cross multiply
   91,017x = 138,361.50 × 138,361.50
4. Step 4: Simplify right side
   91,017x = 19,143,904,682.25
5. Step 5: Solve for x
   x = 19,143,904,682.25/91,017
6. Step 6: Final answer
   x = 210,333.29