Finding the Third Proportional to 129,118.50 and 188,541

Step by Step Solution

1. Step 1: Write the proportion equation
   129,118.50 : 188,541 = 188,541 : x
2. Step 2: Convert to fraction form
   129,118.50/188,541 = 188,541/x
3. Step 3: Cross multiply
   129,118.50x = 188,541 × 188,541
4. Step 4: Simplify right side
   129,118.50x = 35,547,708,681
5. Step 5: Solve for x
   x = 35,547,708,681/129,118.50
6. Step 6: Final answer
   x = 275,310.73