Finding the Third Proportional to 133,872 and 215,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,872 : 215,239.50 = 215,239.50 : x
2. Step 2: Convert to fraction form
   133,872/215,239.50 = 215,239.50/x
3. Step 3: Cross multiply
   133,872x = 215,239.50 × 215,239.50
4. Step 4: Simplify right side
   133,872x = 46,328,042,360.25
5. Step 5: Solve for x
   x = 46,328,042,360.25/133,872
6. Step 6: Final answer
   x = 346,062.23