Finding the Third Proportional to 103,149 and 139,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,149 : 139,171.50 = 139,171.50 : x
2. Step 2: Convert to fraction form
   103,149/139,171.50 = 139,171.50/x
3. Step 3: Cross multiply
   103,149x = 139,171.50 × 139,171.50
4. Step 4: Simplify right side
   103,149x = 19,368,706,412.25
5. Step 5: Solve for x
   x = 19,368,706,412.25/103,149
6. Step 6: Final answer
   x = 187,774.06