Finding the Third Proportional to 91,149 and 137,983.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,149 : 137,983.50 = 137,983.50 : x
2. Step 2: Convert to fraction form
   91,149/137,983.50 = 137,983.50/x
3. Step 3: Cross multiply
   91,149x = 137,983.50 × 137,983.50
4. Step 4: Simplify right side
   91,149x = 19,039,446,272.25
5. Step 5: Solve for x
   x = 19,039,446,272.25/91,149
6. Step 6: Final answer
   x = 208,882.67