Finding the Third Proportional to 78,807.38 and 171,010.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,807.38 : 171,010.69 = 171,010.69 : x
2. Step 2: Convert to fraction form
   78,807.38/171,010.69 = 171,010.69/x
3. Step 3: Cross multiply
   78,807.38x = 171,010.69 × 171,010.69
4. Step 4: Simplify right side
   78,807.38x = 29,244,655,239.22
5. Step 5: Solve for x
   x = 29,244,655,239.22/78,807.38
6. Step 6: Final answer
   x = 371,090.34